diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 2ede1712048be..58f9f3e3fdc18 100644
--- a/testing/web-platform/meta/MANIFEST.json
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-   "3040b777d962f2bdfb45ee45a6a12df6faa9bfc7",
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   "wai-aria/treegrid_orientation_unspecified-manual.html": [
-   "790b9a0ad5f7200b6ada1c6b2c8b809e3a0a8449",
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   "wai-aria/treegrid_orientation_vertical-manual.html": [
-   "2cf7399d1a07559a25b24e9444dfca83797a1056",
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    "manual"
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   "wai-aria/treegrid_rowcount_3-manual.html": [
-   "7dd93febb3cf0264e0806146f24fc01bc65db093",
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    "manual"
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-   "f8415c67231925ead8b95d4c1d0b99e70631a118",
+   "f5b6cdc972b0f4ba28009b8f8c52183fec46811c",
    "manual"
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-   "036b95e2f0c9c94e95889486b98d778254c1a600",
+   "d8e2cd3cffce3330321fb25c0bf195efb7a80ee6",
    "manual"
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-   "cbc6184c2b9cd7ee1e45a99b9aef9849b383fced",
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-   "e82b65811aa337b03cfe72d25215c29234b798dd",
+   "c2f608333d243b0a5cb9296a1dc39c168d69527f",
    "manual"
   ],
   "wake-lock/OWNERS": [
@@ -611812,31 +611812,31 @@
    "testharness"
   ],
   "web-nfc/nfc_push_ArrayBuffer-manual.https.html": [
-   "79189e00a1d62f0e1f936d5ca687bb48522dd0bc",
+   "acb2d28a5af18c96a234f4ff3312e7ea1831e23a",
    "manual"
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   "web-nfc/nfc_push_DOMString-manual.https.html": [
-   "f2656df15c0d0cf49eeb3645cf71bc1ab1c967c9",
+   "7cdeafe31291135dd99eb956fc9c6ff1b76211c0",
    "manual"
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   "web-nfc/nfc_recordType_empty-manual.https.html": [
-   "e85ae0dbad98d4f842d3b9d8b4a6f36b8071e5d6",
+   "4c24083a30ca16067454b6131ef2ae9f9ca12e27",
    "manual"
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   "web-nfc/nfc_recordType_json-manual.https.html": [
-   "58a65c05bbb9ba434dffb5d4a4adf9575ee5eaf8",
+   "194fa3df3ba9fd0e817c7c5651766d3c1c3d4292",
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-   "3dd5221c1532b10c6aeb1e2380da73977f59993f",
+   "2aad46712ae71944fad51eca2b7a763866ba135f",
    "manual"
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   "web-nfc/nfc_recordType_text-manual.https.html": [
-   "287fb5e7659b0fe56e7747f8d0ecbeb461494b0d",
+   "9971b4c2c05587ceb3c6620fafd53887f0e1815d",
    "manual"
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   "web-nfc/nfc_recordType_url-manual.https.html": [
-   "efeacce32b87627d824131af5624d4f88f1f6045",
+   "f1b038d79eaf826bd52f8f137d4015e00650f81d",
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   "web-nfc/nfc_watch.https.html": [
diff --git a/testing/web-platform/tests/FileAPI/url/url_createobjecturl_file-manual.html b/testing/web-platform/tests/FileAPI/url/url_createobjecturl_file-manual.html
index 469606a8e4561..7ae32512e07c7 100644
--- a/testing/web-platform/tests/FileAPI/url/url_createobjecturl_file-manual.html
+++ b/testing/web-platform/tests/FileAPI/url/url_createobjecturl_file-manual.html
@@ -3,9 +3,9 @@
 <title>FileAPI Test: Creating Blob URL with File</title>
 <link rel="author" title="Intel" href="http://www.intel.com">
 <link rel="author" title="JunChen Xia" href="mailto:xjconlyme@gmail.com">
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<meta name="timeout" content="long">
 
 <div>
   <p>Test steps:</p>
diff --git a/testing/web-platform/tests/accname/description_1.0_combobox-focusable-manual.html b/testing/web-platform/tests/accname/description_1.0_combobox-focusable-manual.html
index ce26e8a693627..c0d54d6c2338d 100644
--- a/testing/web-platform/tests/accname/description_1.0_combobox-focusable-manual.html
+++ b/testing/web-platform/tests/accname/description_1.0_combobox-focusable-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description 1.0 combobox-focusable</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_from_content_of_describedby_element-manual.html b/testing/web-platform/tests/accname/description_from_content_of_describedby_element-manual.html
index 4dcbee0f57261..2911d1d031a87 100644
--- a/testing/web-platform/tests/accname/description_from_content_of_describedby_element-manual.html
+++ b/testing/web-platform/tests/accname/description_from_content_of_describedby_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description from content of describedby element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_from_content_of_describedby_element_which_is_hidden-manual.html b/testing/web-platform/tests/accname/description_from_content_of_describedby_element_which_is_hidden-manual.html
index 9f92288ffe806..8958e41bfd225 100644
--- a/testing/web-platform/tests/accname/description_from_content_of_describedby_element_which_is_hidden-manual.html
+++ b/testing/web-platform/tests/accname/description_from_content_of_describedby_element_which_is_hidden-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description from content of describedby element which is hidden</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_link-with-label-manual.html b/testing/web-platform/tests/accname/description_link-with-label-manual.html
index 0e4b2b2e5bddb..09c32db1c2ee4 100644
--- a/testing/web-platform/tests/accname/description_link-with-label-manual.html
+++ b/testing/web-platform/tests/accname/description_link-with-label-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description link-with-label</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_557-manual.html b/testing/web-platform/tests/accname/description_test_case_557-manual.html
index 8c17904574349..1294baf65718f 100644
--- a/testing/web-platform/tests/accname/description_test_case_557-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_557-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 557</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_664-manual.html b/testing/web-platform/tests/accname/description_test_case_664-manual.html
index 0ba57426d2ede..f4e813643cab0 100644
--- a/testing/web-platform/tests/accname/description_test_case_664-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_664-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 664</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_665-manual.html b/testing/web-platform/tests/accname/description_test_case_665-manual.html
index 341d6d28a2dbb..e97a41de354ac 100644
--- a/testing/web-platform/tests/accname/description_test_case_665-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_665-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 665</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_666-manual.html b/testing/web-platform/tests/accname/description_test_case_666-manual.html
index 9681b89e98aab..378979ca7355e 100644
--- a/testing/web-platform/tests/accname/description_test_case_666-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_666-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 666</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_772-manual.html b/testing/web-platform/tests/accname/description_test_case_772-manual.html
index 03d46cbe3b381..efc58686ce6b3 100644
--- a/testing/web-platform/tests/accname/description_test_case_772-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_772-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 772</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_773-manual.html b/testing/web-platform/tests/accname/description_test_case_773-manual.html
index 727a8fe5a7def..ea004cffee061 100644
--- a/testing/web-platform/tests/accname/description_test_case_773-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_773-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 773</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_774-manual.html b/testing/web-platform/tests/accname/description_test_case_774-manual.html
index 51f9380e4090a..6fafc81be391c 100644
--- a/testing/web-platform/tests/accname/description_test_case_774-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_774-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 774</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_838-manual.html b/testing/web-platform/tests/accname/description_test_case_838-manual.html
index 99c49d9cbea3f..df4210a770462 100644
--- a/testing/web-platform/tests/accname/description_test_case_838-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_838-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case 838</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_broken_reference-manual.html b/testing/web-platform/tests/accname/description_test_case_broken_reference-manual.html
index c44b0a598a280..724849620124e 100644
--- a/testing/web-platform/tests/accname/description_test_case_broken_reference-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_broken_reference-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case broken reference</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_test_case_one_valid_reference-manual.html b/testing/web-platform/tests/accname/description_test_case_one_valid_reference-manual.html
index a998aae79600e..bce5ce6cb7f21 100644
--- a/testing/web-platform/tests/accname/description_test_case_one_valid_reference-manual.html
+++ b/testing/web-platform/tests/accname/description_test_case_one_valid_reference-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description test case one valid reference</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/description_title-same-element-manual.html b/testing/web-platform/tests/accname/description_title-same-element-manual.html
index fe8cd37c703af..8c926e34c8457 100644
--- a/testing/web-platform/tests/accname/description_title-same-element-manual.html
+++ b/testing/web-platform/tests/accname/description_title-same-element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Description title-same-element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_1.0_combobox-focusable-alternative-manual.html b/testing/web-platform/tests/accname/name_1.0_combobox-focusable-alternative-manual.html
index 000d3f6374fb6..454be9e5e36a2 100644
--- a/testing/web-platform/tests/accname/name_1.0_combobox-focusable-alternative-manual.html
+++ b/testing/web-platform/tests/accname/name_1.0_combobox-focusable-alternative-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name 1.0 combobox-focusable-alternative</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_1.0_combobox-focusable-manual.html b/testing/web-platform/tests/accname/name_1.0_combobox-focusable-manual.html
index abc53273b7c5c..bb7a03121e855 100644
--- a/testing/web-platform/tests/accname/name_1.0_combobox-focusable-manual.html
+++ b/testing/web-platform/tests/accname/name_1.0_combobox-focusable-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name 1.0 combobox-focusable</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-combobox-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-combobox-manual.html
index 2797514bd7f42..24cbb70671214 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-combobox-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-combobox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-listbox-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-listbox-manual.html
index ca28c177c4040..a7bbe4c1928c7 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-listbox-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-listbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-listbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-menu-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-menu-manual.html
index f838f2426cfe1..1c18b9853289a 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-menu-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-menu-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-menu</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-select-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-select-manual.html
index 52a5ca80bbb03..06c41e0b5daef 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-select-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-select-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-select</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-slider-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-slider-manual.html
index 520e4a45f8713..48741d3c0fd8c 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-slider-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-slider-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-slider</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-spinbutton-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-spinbutton-manual.html
index bf47b1d912c29..d5cf7a55bf371 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-spinbutton-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-spinbutton-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-spinbutton</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-embedded-textbox-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-embedded-textbox-manual.html
index 8b0f529f32e3e..2d8642b7cca47 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-embedded-textbox-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-embedded-textbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-embedded-textbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-alternative-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-alternative-manual.html
index 34bfd02b29265..9f446aaa667ed 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-alternative-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-alternative-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-multiple-label-alternative</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-manual.html b/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-manual.html
index 37486e1f9506f..54c218c41c4d6 100644
--- a/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-label-multiple-label-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-label-multiple-label</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_checkbox-title-manual.html b/testing/web-platform/tests/accname/name_checkbox-title-manual.html
index b5b9a5ea3e52b..83b5a8c4d1129 100644
--- a/testing/web-platform/tests/accname/name_checkbox-title-manual.html
+++ b/testing/web-platform/tests/accname/name_checkbox-title-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name checkbox-title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-embedded-combobox-manual.html b/testing/web-platform/tests/accname/name_file-label-embedded-combobox-manual.html
index a2799324e1b25..06adca72fcacc 100644
--- a/testing/web-platform/tests/accname/name_file-label-embedded-combobox-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-embedded-combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-embedded-combobox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-embedded-menu-manual.html b/testing/web-platform/tests/accname/name_file-label-embedded-menu-manual.html
index 0a88e4d4b9d9c..de6bcbaffebd7 100644
--- a/testing/web-platform/tests/accname/name_file-label-embedded-menu-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-embedded-menu-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-embedded-menu</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-embedded-select-manual.html b/testing/web-platform/tests/accname/name_file-label-embedded-select-manual.html
index 7142c764a1824..117e96cea66ef 100644
--- a/testing/web-platform/tests/accname/name_file-label-embedded-select-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-embedded-select-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-embedded-select</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-embedded-slider-manual.html b/testing/web-platform/tests/accname/name_file-label-embedded-slider-manual.html
index de08bbcc1060d..22a9057f95b92 100644
--- a/testing/web-platform/tests/accname/name_file-label-embedded-slider-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-embedded-slider-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-embedded-slider</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-embedded-spinbutton-manual.html b/testing/web-platform/tests/accname/name_file-label-embedded-spinbutton-manual.html
index 67934a329e175..1432e2fd24273 100644
--- a/testing/web-platform/tests/accname/name_file-label-embedded-spinbutton-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-embedded-spinbutton-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-embedded-spinbutton</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-inline-block-elements-manual.html b/testing/web-platform/tests/accname/name_file-label-inline-block-elements-manual.html
index 74f2b7b718960..c2c16591119b8 100644
--- a/testing/web-platform/tests/accname/name_file-label-inline-block-elements-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-inline-block-elements-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-inline-block-elements</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-inline-block-styles-manual.html b/testing/web-platform/tests/accname/name_file-label-inline-block-styles-manual.html
index 80c2d98bcd4cc..ecf6ed1bb9f98 100644
--- a/testing/web-platform/tests/accname/name_file-label-inline-block-styles-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-inline-block-styles-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-inline-block-styles</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-inline-hidden-elements-manual.html b/testing/web-platform/tests/accname/name_file-label-inline-hidden-elements-manual.html
index 2253f880bbe59..c982b42c16e3c 100644
--- a/testing/web-platform/tests/accname/name_file-label-inline-hidden-elements-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-inline-hidden-elements-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-inline-hidden-elements</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-owned-combobox-manual.html b/testing/web-platform/tests/accname/name_file-label-owned-combobox-manual.html
index 287a7ee23dd99..79a69177e3200 100644
--- a/testing/web-platform/tests/accname/name_file-label-owned-combobox-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-owned-combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-owned-combobox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-label-owned-combobox-owned-listbox-manual.html b/testing/web-platform/tests/accname/name_file-label-owned-combobox-owned-listbox-manual.html
index c8de748de3d98..4bbc6f3613d24 100644
--- a/testing/web-platform/tests/accname/name_file-label-owned-combobox-owned-listbox-manual.html
+++ b/testing/web-platform/tests/accname/name_file-label-owned-combobox-owned-listbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-label-owned-combobox-owned-listbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_file-title-manual.html b/testing/web-platform/tests/accname/name_file-title-manual.html
index 5eae799d78d80..77b7bf68bc66f 100644
--- a/testing/web-platform/tests/accname/name_file-title-manual.html
+++ b/testing/web-platform/tests/accname/name_file-title-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name file-title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_from_content-manual.html b/testing/web-platform/tests/accname/name_from_content-manual.html
index ef393cde07e38..f7e2491d3a270 100644
--- a/testing/web-platform/tests/accname/name_from_content-manual.html
+++ b/testing/web-platform/tests/accname/name_from_content-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name from content</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_from_content_of_label-manual.html b/testing/web-platform/tests/accname/name_from_content_of_label-manual.html
index 7da272aa23970..3eb5b779267b3 100644
--- a/testing/web-platform/tests/accname/name_from_content_of_label-manual.html
+++ b/testing/web-platform/tests/accname/name_from_content_of_label-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name from content of label</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_from_content_of_labelledby_element-manual.html b/testing/web-platform/tests/accname/name_from_content_of_labelledby_element-manual.html
index 8a45e438199a9..a60a8c0a0e0b5 100644
--- a/testing/web-platform/tests/accname/name_from_content_of_labelledby_element-manual.html
+++ b/testing/web-platform/tests/accname/name_from_content_of_labelledby_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name from content of labelledby element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_from_content_of_labelledby_elements_one_of_which_is_hidden-manual.html b/testing/web-platform/tests/accname/name_from_content_of_labelledby_elements_one_of_which_is_hidden-manual.html
index c6873b74ff609..879393037e547 100644
--- a/testing/web-platform/tests/accname/name_from_content_of_labelledby_elements_one_of_which_is_hidden-manual.html
+++ b/testing/web-platform/tests/accname/name_from_content_of_labelledby_elements_one_of_which_is_hidden-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name from content of labelledby elements one of which is hidden</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_heading-combobox-focusable-alternative-manual.html b/testing/web-platform/tests/accname/name_heading-combobox-focusable-alternative-manual.html
index 2c7db17557bc6..c1540b12bedca 100644
--- a/testing/web-platform/tests/accname/name_heading-combobox-focusable-alternative-manual.html
+++ b/testing/web-platform/tests/accname/name_heading-combobox-focusable-alternative-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name  heading-combobox-focusable-alternative</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_image-title-manual.html b/testing/web-platform/tests/accname/name_image-title-manual.html
index 51ead25889404..43ce9be14e63b 100644
--- a/testing/web-platform/tests/accname/name_image-title-manual.html
+++ b/testing/web-platform/tests/accname/name_image-title-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name image-title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_link-mixed-content-manual.html b/testing/web-platform/tests/accname/name_link-mixed-content-manual.html
index 97df48a460f31..f089ebde60cda 100644
--- a/testing/web-platform/tests/accname/name_link-mixed-content-manual.html
+++ b/testing/web-platform/tests/accname/name_link-mixed-content-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name link-mixed-content</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_link-with-label-manual.html b/testing/web-platform/tests/accname/name_link-with-label-manual.html
index 18e82718b99cc..e8f1e3f813fd0 100644
--- a/testing/web-platform/tests/accname/name_link-with-label-manual.html
+++ b/testing/web-platform/tests/accname/name_link-with-label-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name link-with-label</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-label-embedded-combobox-manual.html b/testing/web-platform/tests/accname/name_password-label-embedded-combobox-manual.html
index b2762aa6ae7c6..39c8005a719ff 100644
--- a/testing/web-platform/tests/accname/name_password-label-embedded-combobox-manual.html
+++ b/testing/web-platform/tests/accname/name_password-label-embedded-combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-label-embedded-combobox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-label-embedded-menu-manual.html b/testing/web-platform/tests/accname/name_password-label-embedded-menu-manual.html
index 8ef9d8dd2f501..d6ad64966ad46 100644
--- a/testing/web-platform/tests/accname/name_password-label-embedded-menu-manual.html
+++ b/testing/web-platform/tests/accname/name_password-label-embedded-menu-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-label-embedded-menu</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-label-embedded-select-manual.html b/testing/web-platform/tests/accname/name_password-label-embedded-select-manual.html
index 36471160273b9..f4b96e2cd1992 100644
--- a/testing/web-platform/tests/accname/name_password-label-embedded-select-manual.html
+++ b/testing/web-platform/tests/accname/name_password-label-embedded-select-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-label-embedded-select</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-label-embedded-slider-manual.html b/testing/web-platform/tests/accname/name_password-label-embedded-slider-manual.html
index d5686a48c54c3..7701b8b44e169 100644
--- a/testing/web-platform/tests/accname/name_password-label-embedded-slider-manual.html
+++ b/testing/web-platform/tests/accname/name_password-label-embedded-slider-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-label-embedded-slider</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-label-embedded-spinbutton-manual.html b/testing/web-platform/tests/accname/name_password-label-embedded-spinbutton-manual.html
index 73b0d664c78a9..67cd55dc382d7 100644
--- a/testing/web-platform/tests/accname/name_password-label-embedded-spinbutton-manual.html
+++ b/testing/web-platform/tests/accname/name_password-label-embedded-spinbutton-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-label-embedded-spinbutton</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_password-title-manual.html b/testing/web-platform/tests/accname/name_password-title-manual.html
index 2ea977fd28945..3f3eb416099b6 100644
--- a/testing/web-platform/tests/accname/name_password-title-manual.html
+++ b/testing/web-platform/tests/accname/name_password-title-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name password-title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/accname/name_radio-label-embedded-combobox-manual.html b/testing/web-platform/tests/accname/name_radio-label-embedded-combobox-manual.html
index 72d7017c534bf..3facb5e1b2ccd 100644
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index 8ca6d11c05d27..3752b1fcd63cb 100644
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index 185d893296911..6f632f94cd03d 100644
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index aea5f8b85ce8e..5c82a06bfb09b 100644
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index aef42728a6c68..cb6f065e8f687 100644
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index da1925241c938..659740b8872de 100644
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diff --git a/testing/web-platform/tests/accname/name_test_case_566-manual.html b/testing/web-platform/tests/accname/name_test_case_566-manual.html
index 20189f31899b6..5ffef66083c2b 100644
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index 52503e62397d8..6d2593b3301cd 100644
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index 8a1278bbe7fb9..82ee27cc26be1 100644
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index 41f06aaea7660..06d56eef393cc 100644
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index dd410b88e92aa..e621db7517fcc 100644
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index 600d75fe173a8..70394d28a80c4 100644
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index 993c4d16c16ad..4e7fd81bcf7a0 100644
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index 9ab6467a28146..0381f1b947343 100644
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@@ -3,7 +3,6 @@
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index 159edc7472873..a9b2d2fc61899 100644
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@@ -3,7 +3,6 @@
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     <title>Name test case 759</title>
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index 30d8a7e0e9e11..bab3c19ead521 100644
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@@ -3,7 +3,6 @@
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index 3dedb942a4dea..7848eea9b50c7 100644
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index e131861d0c744..d0d04e3ce42ec 100644
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@@ -3,7 +3,6 @@
   <head>
     <title>Name test case 762</title>
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index 7fde09c3ce8f1..a32b1c2b529b5 100644
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     <title>Name text-label-embedded-combobox</title>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/accname/name_text-label-embedded-menu-manual.html b/testing/web-platform/tests/accname/name_text-label-embedded-menu-manual.html
index 40b94fcc892c0..d6fddc6f1c5b2 100644
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@@ -3,7 +3,6 @@
   <head>
     <title>Name text-label-embedded-menu</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/accname/name_text-label-embedded-select-manual.html b/testing/web-platform/tests/accname/name_text-label-embedded-select-manual.html
index e27a302e61167..6a0f6e10b8602 100644
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@@ -3,7 +3,6 @@
   <head>
     <title>Name text-label-embedded-select</title>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/accname/name_text-label-embedded-slider-manual.html b/testing/web-platform/tests/accname/name_text-label-embedded-slider-manual.html
index d65c1c104b66e..caf91243fa05f 100644
--- a/testing/web-platform/tests/accname/name_text-label-embedded-slider-manual.html
+++ b/testing/web-platform/tests/accname/name_text-label-embedded-slider-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name text-label-embedded-slider</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/accname/name_text-label-embedded-spinbutton-manual.html b/testing/web-platform/tests/accname/name_text-label-embedded-spinbutton-manual.html
index e81e220eef945..8e1b1e21dd8eb 100644
--- a/testing/web-platform/tests/accname/name_text-label-embedded-spinbutton-manual.html
+++ b/testing/web-platform/tests/accname/name_text-label-embedded-spinbutton-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name text-label-embedded-spinbutton</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/accname/name_text-title-manual.html b/testing/web-platform/tests/accname/name_text-title-manual.html
index cc0b645e89a3f..720a94cd7aeb8 100644
--- a/testing/web-platform/tests/accname/name_text-title-manual.html
+++ b/testing/web-platform/tests/accname/name_text-title-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Name text-title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/annotation-model/annotations/annotationMusts-manual.html b/testing/web-platform/tests/annotation-model/annotations/annotationMusts-manual.html
index adfcca89da892..6116e4e776be6 100644
--- a/testing/web-platform/tests/annotation-model/annotations/annotationMusts-manual.html
+++ b/testing/web-platform/tests/annotation-model/annotations/annotationMusts-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>A single ANNOTATION has all required keys and all annotation keys used meet required value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/annotations/annotationOptionals-manual.html b/testing/web-platform/tests/annotation-model/annotations/annotationOptionals-manual.html
index 65be15a582cc6..5d73034b486b5 100644
--- a/testing/web-platform/tests/annotation-model/annotations/annotationOptionals-manual.html
+++ b/testing/web-platform/tests/annotation-model/annotations/annotationOptionals-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Annotation implements optional keys and meets optional key value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/annotations/annotationsAgentOptionals-manual.html b/testing/web-platform/tests/annotation-model/annotations/annotationsAgentOptionals-manual.html
index b187008dade9d..3aadc2139a4d4 100644
--- a/testing/web-platform/tests/annotation-model/annotations/annotationsAgentOptionals-manual.html
+++ b/testing/web-platform/tests/annotation-model/annotations/annotationsAgentOptionals-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Annotation implements optional keys and meets optional key value constraints for Creator and Generator Agents</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/collections/collectionMusts-manual.html b/testing/web-platform/tests/annotation-model/collections/collectionMusts-manual.html
index d1ff44491b1ce..a023956484727 100644
--- a/testing/web-platform/tests/annotation-model/collections/collectionMusts-manual.html
+++ b/testing/web-platform/tests/annotation-model/collections/collectionMusts-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>A single Annotation Collection has all required keys and all collection keys used meet required value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/collections/collectionOptionals-manual.html b/testing/web-platform/tests/annotation-model/collections/collectionOptionals-manual.html
index ce489fce20440..24df82d98217d 100644
--- a/testing/web-platform/tests/annotation-model/collections/collectionOptionals-manual.html
+++ b/testing/web-platform/tests/annotation-model/collections/collectionOptionals-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>A single Annotation Collection implements optional keys and meets optional key value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
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 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/collections/pages/pageMusts-manual.html b/testing/web-platform/tests/annotation-model/collections/pages/pageMusts-manual.html
index 843faaf5e7839..4422bbae3569f 100644
--- a/testing/web-platform/tests/annotation-model/collections/pages/pageMusts-manual.html
+++ b/testing/web-platform/tests/annotation-model/collections/pages/pageMusts-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>A single Annotation Page has all required keys and all page keys present meet required value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/collections/pages/pageOptionals-manual.html b/testing/web-platform/tests/annotation-model/collections/pages/pageOptionals-manual.html
index e68f2d17c65d4..95f66bb7f763b 100644
--- a/testing/web-platform/tests/annotation-model/collections/pages/pageOptionals-manual.html
+++ b/testing/web-platform/tests/annotation-model/collections/pages/pageOptionals-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>A single Annotation Page implements optional keys and meets optional key value constraints</title>
-<link rel="stylesheet" href="/resources/testharness.css">
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 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/tools/template_js b/testing/web-platform/tests/annotation-model/tools/template_js
index 4be9fc8534e06..29b76b323f1c4 100644
--- a/testing/web-platform/tests/annotation-model/tools/template_js
+++ b/testing/web-platform/tests/annotation-model/tools/template_js
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>{{TESTTITLE}}</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-model/tools/template_manual b/testing/web-platform/tests/annotation-model/tools/template_manual
index d7c3315c5076c..14b3b9aa8be2f 100644
--- a/testing/web-platform/tests/annotation-model/tools/template_manual
+++ b/testing/web-platform/tests/annotation-model/tools/template_manual
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>{{TESTTITLE}}</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/annotation-model/scripts/ajv.min.js"></script>
diff --git a/testing/web-platform/tests/annotation-vocab/01-validJSON-LD-manual.html b/testing/web-platform/tests/annotation-vocab/01-validJSON-LD-manual.html
index 88a4ccf2a16ea..3d6623a3a5048 100644
--- a/testing/web-platform/tests/annotation-vocab/01-validJSON-LD-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/01-validJSON-LD-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Ensure Vocabulary JSON-LD is valid</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
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diff --git a/testing/web-platform/tests/annotation-vocab/02-context-to-triples-manual.html b/testing/web-platform/tests/annotation-vocab/02-context-to-triples-manual.html
index b9d6603f336d0..bfe030d70e69e 100644
--- a/testing/web-platform/tests/annotation-vocab/02-context-to-triples-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/02-context-to-triples-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>JSON-LD context document can be used to convert JSON-LD serialized Annotations into RDF triples</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
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diff --git a/testing/web-platform/tests/annotation-vocab/03-graphs-are-isomorphic-manual.html b/testing/web-platform/tests/annotation-vocab/03-graphs-are-isomorphic-manual.html
index 5061c32eeff81..ed6869caf9dea 100644
--- a/testing/web-platform/tests/annotation-vocab/03-graphs-are-isomorphic-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/03-graphs-are-isomorphic-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Graphs produced are isomorphic</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 </head>
diff --git a/testing/web-platform/tests/annotation-vocab/04-graphs-convert-lossless-manual.html b/testing/web-platform/tests/annotation-vocab/04-graphs-convert-lossless-manual.html
index 95ebfd612ebbc..05e7fb72d274a 100644
--- a/testing/web-platform/tests/annotation-vocab/04-graphs-convert-lossless-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/04-graphs-convert-lossless-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Graphs produced can be converted back into JSON-LD with no loss</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
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diff --git a/testing/web-platform/tests/annotation-vocab/05-ontology-parsed-as-valid-manual.html b/testing/web-platform/tests/annotation-vocab/05-ontology-parsed-as-valid-manual.html
index 331eb23d70378..e1e41e6a487ad 100644
--- a/testing/web-platform/tests/annotation-vocab/05-ontology-parsed-as-valid-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/05-ontology-parsed-as-valid-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Ontology can be parsed without errors</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
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diff --git a/testing/web-platform/tests/annotation-vocab/06-ontology-internally-consistent-manual.html b/testing/web-platform/tests/annotation-vocab/06-ontology-internally-consistent-manual.html
index 84aa43341254c..de9b7d069d33b 100644
--- a/testing/web-platform/tests/annotation-vocab/06-ontology-internally-consistent-manual.html
+++ b/testing/web-platform/tests/annotation-vocab/06-ontology-internally-consistent-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
 <title>Ontology is internally consistent</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 </head>
diff --git a/testing/web-platform/tests/core-aam/alert-manual.html b/testing/web-platform/tests/core-aam/alert-manual.html
index 938da43493930..0177ffb66cb2c 100644
--- a/testing/web-platform/tests/core-aam/alert-manual.html
+++ b/testing/web-platform/tests/core-aam/alert-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>alert</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/alertdialog-manual.html b/testing/web-platform/tests/core-aam/alertdialog-manual.html
index 98d3b1acb0fd1..eacdde32514ae 100644
--- a/testing/web-platform/tests/core-aam/alertdialog-manual.html
+++ b/testing/web-platform/tests/core-aam/alertdialog-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>alertdialog</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/application-manual.html b/testing/web-platform/tests/core-aam/application-manual.html
index 3d22162eba27d..1fe0577810b8c 100644
--- a/testing/web-platform/tests/core-aam/application-manual.html
+++ b/testing/web-platform/tests/core-aam/application-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>application</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-atomic_false-manual.html b/testing/web-platform/tests/core-aam/aria-atomic_false-manual.html
index 61b7b00c4b664..d1ab0b65f9216 100644
--- a/testing/web-platform/tests/core-aam/aria-atomic_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-atomic_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-atomic=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-atomic_true-manual.html b/testing/web-platform/tests/core-aam/aria-atomic_true-manual.html
index 9462c0acd9ab3..74353a6119944 100644
--- a/testing/web-platform/tests/core-aam/aria-atomic_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-atomic_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-atomic=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-autocomplete_both-manual.html b/testing/web-platform/tests/core-aam/aria-autocomplete_both-manual.html
index 6fea23024cc88..9b028467794b7 100644
--- a/testing/web-platform/tests/core-aam/aria-autocomplete_both-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-autocomplete_both-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-autocomplete=both</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-autocomplete_inline-manual.html b/testing/web-platform/tests/core-aam/aria-autocomplete_inline-manual.html
index 32e45dd3af87a..e4b985df8c8a0 100644
--- a/testing/web-platform/tests/core-aam/aria-autocomplete_inline-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-autocomplete_inline-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-autocomplete=inline</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-autocomplete_list-manual.html b/testing/web-platform/tests/core-aam/aria-autocomplete_list-manual.html
index b74f39670f24a..4ba6d68cb17b1 100644
--- a/testing/web-platform/tests/core-aam/aria-autocomplete_list-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-autocomplete_list-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-autocomplete=list</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-busy_false-manual.html b/testing/web-platform/tests/core-aam/aria-busy_false-manual.html
index 0601b60e644bc..70a25082c69a8 100644
--- a/testing/web-platform/tests/core-aam/aria-busy_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-busy_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-busy=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-busy_true-manual.html b/testing/web-platform/tests/core-aam/aria-busy_true-manual.html
index 1d0781caabcea..ce5a5413c6fad 100644
--- a/testing/web-platform/tests/core-aam/aria-busy_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-busy_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-busy=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-busy_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-busy_value_changes-manual.html
index d39fd2fdb6237..ff7c679b501fb 100644
--- a/testing/web-platform/tests/core-aam/aria-busy_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-busy_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-busy value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_false_on_checkbox-manual.html b/testing/web-platform/tests/core-aam/aria-checked_false_on_checkbox-manual.html
index 657e4b0229cce..e508c5b654bc8 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_false_on_checkbox-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_false_on_checkbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked=false on checkbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_false_on_menuitemradio-manual.html b/testing/web-platform/tests/core-aam/aria-checked_false_on_menuitemradio-manual.html
index 3b9cceddae576..a977d4c2da485 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_false_on_menuitemradio-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_false_on_menuitemradio-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked=false on menuitemradio</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_mixed-manual.html b/testing/web-platform/tests/core-aam/aria-checked_mixed-manual.html
index cb876d76c90fc..c685b8bc288ee 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_mixed-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_mixed-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked=mixed</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_true_on_checkbox-manual.html b/testing/web-platform/tests/core-aam/aria-checked_true_on_checkbox-manual.html
index 72c45db5edf6f..440731c864208 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_true_on_checkbox-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_true_on_checkbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked=true on checkbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_true_on_menuitemradio-manual.html b/testing/web-platform/tests/core-aam/aria-checked_true_on_menuitemradio-manual.html
index 224bc0912a89f..0d22a08bc30a3 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_true_on_menuitemradio-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_true_on_menuitemradio-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked=true on menuitemradio</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-checked_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-checked_value_changes-manual.html
index 5de5e8a11117b..f90ac2fc6258b 100644
--- a/testing/web-platform/tests/core-aam/aria-checked_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-checked_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-checked value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-colcount_new-manual.html b/testing/web-platform/tests/core-aam/aria-colcount_new-manual.html
index 60b797b3b57a4..9ab005f9be700 100644
--- a/testing/web-platform/tests/core-aam/aria-colcount_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-colcount_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-colcount NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-colindex_new-manual.html b/testing/web-platform/tests/core-aam/aria-colindex_new-manual.html
index 3a0cead8ca67b..0f48509a82dbb 100644
--- a/testing/web-platform/tests/core-aam/aria-colindex_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-colindex_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-colindex NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-colspan_new-manual.html b/testing/web-platform/tests/core-aam/aria-colspan_new-manual.html
index d9148f6a598fa..bd99cde04dbd9 100644
--- a/testing/web-platform/tests/core-aam/aria-colspan_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-colspan_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-colspan NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-controls-manual.html b/testing/web-platform/tests/core-aam/aria-controls-manual.html
index 29355eba68f2e..e903d21fe8ec6 100644
--- a/testing/web-platform/tests/core-aam/aria-controls-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-controls-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-controls</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-current_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-current_value_changes-manual.html
index 57c65cbfe668b..14a5aaeab94a2 100644
--- a/testing/web-platform/tests/core-aam/aria-current_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-current_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-current value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-current_with_non-false_allowed_value_new-manual.html b/testing/web-platform/tests/core-aam/aria-current_with_non-false_allowed_value_new-manual.html
index 23f79265ac057..da9e2bedbd050 100644
--- a/testing/web-platform/tests/core-aam/aria-current_with_non-false_allowed_value_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-current_with_non-false_allowed_value_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-current with non-false allowed value NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-current_with_unrecognized_value_new-manual.html b/testing/web-platform/tests/core-aam/aria-current_with_unrecognized_value_new-manual.html
index ad1e7f6bf66b4..a01f730917592 100644
--- a/testing/web-platform/tests/core-aam/aria-current_with_unrecognized_value_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-current_with_unrecognized_value_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-current with unrecognized value NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-describedby-manual.html b/testing/web-platform/tests/core-aam/aria-describedby-manual.html
index 473b5554915d3..4cffe6fcb0573 100644
--- a/testing/web-platform/tests/core-aam/aria-describedby-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-describedby-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-describedby</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-details_new-manual.html b/testing/web-platform/tests/core-aam/aria-details_new-manual.html
index cbce3c9315916..1b182fcda54a3 100644
--- a/testing/web-platform/tests/core-aam/aria-details_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-details_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-details NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-disabled_false-manual.html b/testing/web-platform/tests/core-aam/aria-disabled_false-manual.html
index 078271ce1285e..e755d8ed03959 100644
--- a/testing/web-platform/tests/core-aam/aria-disabled_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-disabled_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-disabled=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-disabled_true-manual.html b/testing/web-platform/tests/core-aam/aria-disabled_true-manual.html
index bc469f7c7112e..f373faff371e5 100644
--- a/testing/web-platform/tests/core-aam/aria-disabled_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-disabled_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-disabled=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-disabled_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-disabled_value_changes-manual.html
index 93249342629ab..41236f106c144 100644
--- a/testing/web-platform/tests/core-aam/aria-disabled_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-disabled_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-disabled value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_copy-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_copy-manual.html
index 8848d17faa4c6..6122d126fc42c 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_copy-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_copy-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=copy</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_execute-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_execute-manual.html
index ec3432bbe519c..54578f73da901 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_execute-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_execute-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=execute</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_link-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_link-manual.html
index 2dbbd1781636f..1dd86a30f7d18 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_link-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_link-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=link</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_move-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_move-manual.html
index 332b838d9b567..eeee18e680ded 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_move-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_move-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=move</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_none-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_none-manual.html
index 41cd08074b665..344349c8bd267 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_none-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_none-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=none</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_popup-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_popup-manual.html
index 8f1b84fa32a6e..2e00ae2827fd5 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_popup-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_popup-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect=popup</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-dropeffect_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-dropeffect_value_changes-manual.html
index 9302b3b1f7829..6e623c0cb6cb8 100644
--- a/testing/web-platform/tests/core-aam/aria-dropeffect_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-dropeffect_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-dropeffect value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-errormessage-manual.html b/testing/web-platform/tests/core-aam/aria-errormessage-manual.html
index 128d93f6c073a..fada768e740c5 100644
--- a/testing/web-platform/tests/core-aam/aria-errormessage-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-errormessage-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-errormessage</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-expanded_false-manual.html b/testing/web-platform/tests/core-aam/aria-expanded_false-manual.html
index c0b8bd68a7032..256099868bb05 100644
--- a/testing/web-platform/tests/core-aam/aria-expanded_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-expanded_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-expanded=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-expanded_true-manual.html b/testing/web-platform/tests/core-aam/aria-expanded_true-manual.html
index 0cbdffaeb7c7e..30f0c6a0f5d9e 100644
--- a/testing/web-platform/tests/core-aam/aria-expanded_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-expanded_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-expanded=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-expanded_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-expanded_value_changes-manual.html
index e8f58d2dec081..f6767b185788b 100644
--- a/testing/web-platform/tests/core-aam/aria-expanded_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-expanded_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-expanded value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-flowto-manual.html b/testing/web-platform/tests/core-aam/aria-flowto-manual.html
index 23816319bc61e..0902551df7cd9 100644
--- a/testing/web-platform/tests/core-aam/aria-flowto-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-flowto-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-flowto</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-grabbed_false-manual.html b/testing/web-platform/tests/core-aam/aria-grabbed_false-manual.html
index 006914e32a1ab..7b6404c2346fb 100644
--- a/testing/web-platform/tests/core-aam/aria-grabbed_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-grabbed_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-grabbed=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-grabbed_true-manual.html b/testing/web-platform/tests/core-aam/aria-grabbed_true-manual.html
index aaec8e150e28a..5ef11ce286d40 100644
--- a/testing/web-platform/tests/core-aam/aria-grabbed_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-grabbed_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-grabbed=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-grabbed_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-grabbed_value_changes-manual.html
index 645d80dc22a93..795a0e88c5206 100644
--- a/testing/web-platform/tests/core-aam/aria-grabbed_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-grabbed_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-grabbed value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_dialog_new-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_dialog_new-manual.html
index 747113fbe5808..e2111a8d30cdc 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_dialog_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_dialog_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=dialog NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_false-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_false-manual.html
index 2eb81ee0199aa..50b0fad435d50 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_listbox_new-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_listbox_new-manual.html
index 4311592bbd389..70d126829098f 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_listbox_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_listbox_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=listbox NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_menu_new-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_menu_new-manual.html
index 966a5bcce37e9..95fde1472fec5 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_menu_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_menu_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=menu NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_tree_new-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_tree_new-manual.html
index 7a048fbbf55f5..cc3e33c72ffdc 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_tree_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_tree_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=tree NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-haspopup_true-manual.html b/testing/web-platform/tests/core-aam/aria-haspopup_true-manual.html
index 8ee14bf1a3422..57b5ad4b8a55f 100644
--- a/testing/web-platform/tests/core-aam/aria-haspopup_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-haspopup_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-haspopup=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-hidden_true-manual.html b/testing/web-platform/tests/core-aam/aria-hidden_true-manual.html
index f9ffcf9adfce4..fd597f337b41d 100644
--- a/testing/web-platform/tests/core-aam/aria-hidden_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-hidden_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-hidden=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-hidden_true_when_element_is_focused_or_fires_event_new-manual.html b/testing/web-platform/tests/core-aam/aria-hidden_true_when_element_is_focused_or_fires_event_new-manual.html
index 81f19f1fc0bdf..4d47e89520eed 100644
--- a/testing/web-platform/tests/core-aam/aria-hidden_true_when_element_is_focused_or_fires_event_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-hidden_true_when_element_is_focused_or_fires_event_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-hidden=true when element is focused or fires event NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-hidden_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-hidden_value_changes-manual.html
index 445a942025e4d..aa43a9a99c826 100644
--- a/testing/web-platform/tests/core-aam/aria-hidden_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-hidden_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-hidden value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_false-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_false-manual.html
index c7fbb2c4475fa..86c43bbbfff9e 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_grammar-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_grammar-manual.html
index 60bc5d7a6f0d1..ee8be2dd2f088 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_grammar-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_grammar-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid=grammar</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_spelling-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_spelling-manual.html
index a176221b239f5..53e9f9852a8e6 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_spelling-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_spelling-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid=spelling</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_true-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_true-manual.html
index 196af9ba7c80a..84b966f76c2a5 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_value_changes-manual.html
index 96b33260aa7c2..c34109f2cd1ab 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-invalid_with_unrecognized_value_new-manual.html b/testing/web-platform/tests/core-aam/aria-invalid_with_unrecognized_value_new-manual.html
index dd10bafe70e91..38a433046d221 100644
--- a/testing/web-platform/tests/core-aam/aria-invalid_with_unrecognized_value_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-invalid_with_unrecognized_value_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-invalid with unrecognized value NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-keyshortcuts_new-manual.html b/testing/web-platform/tests/core-aam/aria-keyshortcuts_new-manual.html
index f8dbdb0b55e2b..47f18e615f3fb 100644
--- a/testing/web-platform/tests/core-aam/aria-keyshortcuts_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-keyshortcuts_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-keyshortcuts NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-label-manual.html b/testing/web-platform/tests/core-aam/aria-label-manual.html
index 00c7e1e0d9583..ec3fa2593e25f 100644
--- a/testing/web-platform/tests/core-aam/aria-label-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-label-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-label</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-labelledby-manual.html b/testing/web-platform/tests/core-aam/aria-labelledby-manual.html
index 557bba9492705..8e1446931b55f 100644
--- a/testing/web-platform/tests/core-aam/aria-labelledby-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-labelledby-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-labelledby</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-level_on_heading-manual.html b/testing/web-platform/tests/core-aam/aria-level_on_heading-manual.html
index 950c406cf61b0..92afe8e1f9ccf 100644
--- a/testing/web-platform/tests/core-aam/aria-level_on_heading-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-level_on_heading-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-level on heading</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-level_on_non-heading-manual.html b/testing/web-platform/tests/core-aam/aria-level_on_non-heading-manual.html
index 2698040bb74d7..0dbcf0e843b1d 100644
--- a/testing/web-platform/tests/core-aam/aria-level_on_non-heading-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-level_on_non-heading-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-level on non-heading</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-live_assertive-manual.html b/testing/web-platform/tests/core-aam/aria-live_assertive-manual.html
index 3e6ebae3eebb5..1f46482bb2162 100644
--- a/testing/web-platform/tests/core-aam/aria-live_assertive-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-live_assertive-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-live=assertive</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-live_off-manual.html b/testing/web-platform/tests/core-aam/aria-live_off-manual.html
index 958ecad4fa83d..6badb3fbe3f5a 100644
--- a/testing/web-platform/tests/core-aam/aria-live_off-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-live_off-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-live=off</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-live_polite-manual.html b/testing/web-platform/tests/core-aam/aria-live_polite-manual.html
index 95d672be8110c..77d2563dbfa6d 100644
--- a/testing/web-platform/tests/core-aam/aria-live_polite-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-live_polite-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-live=polite</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-modal_false_new-manual.html b/testing/web-platform/tests/core-aam/aria-modal_false_new-manual.html
index f32b5c1fb1092..b1e4817824160 100644
--- a/testing/web-platform/tests/core-aam/aria-modal_false_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-modal_false_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-modal=false NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-modal_true_new-manual.html b/testing/web-platform/tests/core-aam/aria-modal_true_new-manual.html
index 5eb8e893ad766..39ff6a62c5d6e 100644
--- a/testing/web-platform/tests/core-aam/aria-modal_true_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-modal_true_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-modal=true NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-multiline_false-manual.html b/testing/web-platform/tests/core-aam/aria-multiline_false-manual.html
index cf4750e3e1491..32f384c07c3cb 100644
--- a/testing/web-platform/tests/core-aam/aria-multiline_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-multiline_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-multiline=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-multiline_true-manual.html b/testing/web-platform/tests/core-aam/aria-multiline_true-manual.html
index d3af0a3d90b96..92a5a3f30b0af 100644
--- a/testing/web-platform/tests/core-aam/aria-multiline_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-multiline_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-multiline=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-multiselectable_false-manual.html b/testing/web-platform/tests/core-aam/aria-multiselectable_false-manual.html
index d8ef9a36b4cb0..724ea0f2e376c 100644
--- a/testing/web-platform/tests/core-aam/aria-multiselectable_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-multiselectable_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-multiselectable=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-multiselectable_true-manual.html b/testing/web-platform/tests/core-aam/aria-multiselectable_true-manual.html
index a87cf5296dc77..75dbe2b62a4c5 100644
--- a/testing/web-platform/tests/core-aam/aria-multiselectable_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-multiselectable_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-multiselectable=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-orientation_horizontal-manual.html b/testing/web-platform/tests/core-aam/aria-orientation_horizontal-manual.html
index e12292d94088d..903b4a56845e2 100644
--- a/testing/web-platform/tests/core-aam/aria-orientation_horizontal-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-orientation_horizontal-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-orientation=horizontal</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-orientation_undefined_new-manual.html b/testing/web-platform/tests/core-aam/aria-orientation_undefined_new-manual.html
index 2fa22c93e73db..63321cf6b43f1 100644
--- a/testing/web-platform/tests/core-aam/aria-orientation_undefined_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-orientation_undefined_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-orientation=undefined NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-orientation_vertical-manual.html b/testing/web-platform/tests/core-aam/aria-orientation_vertical-manual.html
index bf6f41d9db216..53a4e490b41bb 100644
--- a/testing/web-platform/tests/core-aam/aria-orientation_vertical-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-orientation_vertical-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-orientation=vertical</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-owns_may_need_manual_verification-manual.html b/testing/web-platform/tests/core-aam/aria-owns_may_need_manual_verification-manual.html
index b7752c3d6e4d9..3a02f4aa9f128 100644
--- a/testing/web-platform/tests/core-aam/aria-owns_may_need_manual_verification-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-owns_may_need_manual_verification-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-owns may need manual verification</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-placeholder_new-manual.html b/testing/web-platform/tests/core-aam/aria-placeholder_new-manual.html
index 69f8cf9457563..253eed07a1757 100644
--- a/testing/web-platform/tests/core-aam/aria-placeholder_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-placeholder_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-placeholder NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-posinset-manual.html b/testing/web-platform/tests/core-aam/aria-posinset-manual.html
index 14d46b042dedc..d72b97ff41c0a 100644
--- a/testing/web-platform/tests/core-aam/aria-posinset-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-posinset-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-posinset</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-pressed_false-manual.html b/testing/web-platform/tests/core-aam/aria-pressed_false-manual.html
index 4d2c9dc0f98f5..30878971f1418 100644
--- a/testing/web-platform/tests/core-aam/aria-pressed_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-pressed_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-pressed=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-pressed_mixed-manual.html b/testing/web-platform/tests/core-aam/aria-pressed_mixed-manual.html
index 09ed8c85ff080..1bc5083dca001 100644
--- a/testing/web-platform/tests/core-aam/aria-pressed_mixed-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-pressed_mixed-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-pressed=mixed</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-pressed_true-manual.html b/testing/web-platform/tests/core-aam/aria-pressed_true-manual.html
index 3345977d18b00..532c7f32f3bb2 100644
--- a/testing/web-platform/tests/core-aam/aria-pressed_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-pressed_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-pressed=true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-pressed_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-pressed_value_changes-manual.html
index e8c88b5da9c35..82f12b9ac6cc7 100644
--- a/testing/web-platform/tests/core-aam/aria-pressed_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-pressed_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-pressed value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_false-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_false-manual.html
index 44675b66ce321..7be1a70e4733e 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly=false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_is_unspecified_on_gridcell_new-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_is_unspecified_on_gridcell_new-manual.html
index 721a6644a79d7..fafa8abca032b 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_is_unspecified_on_gridcell_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_is_unspecified_on_gridcell_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly is unspecified on gridcell NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_true_on_checkbox-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_true_on_checkbox-manual.html
index 8b01a2001740b..d5999e1adcc78 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_true_on_checkbox-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_true_on_checkbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly=true on checkbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_true_on_radiogroup-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_true_on_radiogroup-manual.html
index bb4fbc47ee295..ef976971ae434 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_true_on_radiogroup-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_true_on_radiogroup-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly=true on radiogroup</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_true_on_textbox-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_true_on_textbox-manual.html
index 3b9663118b199..0dabdd88fddc4 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_true_on_textbox-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_true_on_textbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly=true on textbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-readonly_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-readonly_value_changes-manual.html
index d9cac765cfce9..8296d59965003 100644
--- a/testing/web-platform/tests/core-aam/aria-readonly_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-readonly_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-readonly value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-relevant-manual.html b/testing/web-platform/tests/core-aam/aria-relevant-manual.html
index be0d29211848a..c9ad1acc37a85 100644
--- a/testing/web-platform/tests/core-aam/aria-relevant-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-relevant-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/aria-required_true-manual.html b/testing/web-platform/tests/core-aam/aria-required_true-manual.html
index 052395b31d9e0..6b44ba40dedd8 100644
--- a/testing/web-platform/tests/core-aam/aria-required_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-required_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-required=true</title>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-required_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-required_value_changes-manual.html
index c38eb91d06066..588b6cf3e6771 100644
--- a/testing/web-platform/tests/core-aam/aria-required_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-required_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-roledescription_is_empty_or_whitespace_characters_new-manual.html b/testing/web-platform/tests/core-aam/aria-roledescription_is_empty_or_whitespace_characters_new-manual.html
index 88fb7a8ea80a7..a146dff0ed12f 100644
--- a/testing/web-platform/tests/core-aam/aria-roledescription_is_empty_or_whitespace_characters_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-roledescription_is_empty_or_whitespace_characters_new-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-roledescription_new-manual.html b/testing/web-platform/tests/core-aam/aria-roledescription_new-manual.html
index b137f4e1615cb..48fc75e1e0d31 100644
--- a/testing/web-platform/tests/core-aam/aria-roledescription_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-roledescription_new-manual.html
@@ -3,7 +3,6 @@
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-rowcount_new-manual.html b/testing/web-platform/tests/core-aam/aria-rowcount_new-manual.html
index 12ab12a04e0ea..8be77d628421a 100644
--- a/testing/web-platform/tests/core-aam/aria-rowcount_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-rowcount_new-manual.html
@@ -3,7 +3,6 @@
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-rowindex_new-manual.html b/testing/web-platform/tests/core-aam/aria-rowindex_new-manual.html
index f3310e90179d0..c89a5f78de0c8 100644
--- a/testing/web-platform/tests/core-aam/aria-rowindex_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-rowindex_new-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/aria-rowspan_new-manual.html b/testing/web-platform/tests/core-aam/aria-rowspan_new-manual.html
index 199cccdb1035f..65b73a07c7f23 100644
--- a/testing/web-platform/tests/core-aam/aria-rowspan_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-rowspan_new-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/aria-selected_false-manual.html b/testing/web-platform/tests/core-aam/aria-selected_false-manual.html
index 1d8d88f5f49ac..b948ace42701b 100644
--- a/testing/web-platform/tests/core-aam/aria-selected_false-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-selected_false-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-selected_true-manual.html b/testing/web-platform/tests/core-aam/aria-selected_true-manual.html
index 64c609ad31160..a40ba05929c67 100644
--- a/testing/web-platform/tests/core-aam/aria-selected_true-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-selected_true-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-setsize_-1_new-manual.html b/testing/web-platform/tests/core-aam/aria-setsize_-1_new-manual.html
index 35e7d85122869..aed5659217302 100644
--- a/testing/web-platform/tests/core-aam/aria-setsize_-1_new-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-setsize_-1_new-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/aria-setsize_3-manual.html b/testing/web-platform/tests/core-aam/aria-setsize_3-manual.html
index 54730724b22fb..643821b74ae59 100644
--- a/testing/web-platform/tests/core-aam/aria-setsize_3-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-setsize_3-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-setsize=3</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-sort_ascending-manual.html b/testing/web-platform/tests/core-aam/aria-sort_ascending-manual.html
index 9d13defbaad4e..7194ba020a05c 100644
--- a/testing/web-platform/tests/core-aam/aria-sort_ascending-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-sort_ascending-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-sort_descending-manual.html b/testing/web-platform/tests/core-aam/aria-sort_descending-manual.html
index 423dc9b3ec2a2..8bf419f62652f 100644
--- a/testing/web-platform/tests/core-aam/aria-sort_descending-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-sort_descending-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/aria-sort_none-manual.html b/testing/web-platform/tests/core-aam/aria-sort_none-manual.html
index cbc0c87b0d414..7969c8ac9d862 100644
--- a/testing/web-platform/tests/core-aam/aria-sort_none-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-sort_none-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-sort=none</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-sort_other-manual.html b/testing/web-platform/tests/core-aam/aria-sort_other-manual.html
index bd7d092827760..81dc3554b8053 100644
--- a/testing/web-platform/tests/core-aam/aria-sort_other-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-sort_other-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-sort=other</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-valuemax-manual.html b/testing/web-platform/tests/core-aam/aria-valuemax-manual.html
index f92332cfeeb7b..3369b5769d4c4 100644
--- a/testing/web-platform/tests/core-aam/aria-valuemax-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuemax-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-valuemax</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-valuemin-manual.html b/testing/web-platform/tests/core-aam/aria-valuemin-manual.html
index 2f5fd07d30001..4f92726447e54 100644
--- a/testing/web-platform/tests/core-aam/aria-valuemin-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuemin-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-valuemin</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/aria-valuenow-manual.html b/testing/web-platform/tests/core-aam/aria-valuenow-manual.html
index 5aa9b94d7dbae..183feaf594a50 100644
--- a/testing/web-platform/tests/core-aam/aria-valuenow-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuenow-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-valuenow_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-valuenow_value_changes-manual.html
index 6ef4f522e9aac..36f9ec5b5ae85 100644
--- a/testing/web-platform/tests/core-aam/aria-valuenow_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuenow_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-valuetext-manual.html b/testing/web-platform/tests/core-aam/aria-valuetext-manual.html
index 031fc60f3f7bd..364a9fb63e88e 100644
--- a/testing/web-platform/tests/core-aam/aria-valuetext-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuetext-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/aria-valuetext_value_changes-manual.html b/testing/web-platform/tests/core-aam/aria-valuetext_value_changes-manual.html
index bf601714d7c51..5362ee4d853b7 100644
--- a/testing/web-platform/tests/core-aam/aria-valuetext_value_changes-manual.html
+++ b/testing/web-platform/tests/core-aam/aria-valuetext_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>aria-valuetext value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/article-manual.html b/testing/web-platform/tests/core-aam/article-manual.html
index f60a7bd50f33b..413f7ca77b782 100644
--- a/testing/web-platform/tests/core-aam/article-manual.html
+++ b/testing/web-platform/tests/core-aam/article-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/banner-manual.html b/testing/web-platform/tests/core-aam/banner-manual.html
index 4c8ad33da45c4..634ac11efadbc 100644
--- a/testing/web-platform/tests/core-aam/banner-manual.html
+++ b/testing/web-platform/tests/core-aam/banner-manual.html
@@ -3,7 +3,6 @@
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     <title>banner</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/button_with_aria-haspopup_dialog_new-manual.html b/testing/web-platform/tests/core-aam/button_with_aria-haspopup_dialog_new-manual.html
index 7ef0a2e6dd2d4..f68e35118f0b2 100644
--- a/testing/web-platform/tests/core-aam/button_with_aria-haspopup_dialog_new-manual.html
+++ b/testing/web-platform/tests/core-aam/button_with_aria-haspopup_dialog_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>button with aria-haspopup="dialog" NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/button_with_aria-haspopup_true-manual.html b/testing/web-platform/tests/core-aam/button_with_aria-haspopup_true-manual.html
index 682179a0cf6a3..c21d0e96062f8 100644
--- a/testing/web-platform/tests/core-aam/button_with_aria-haspopup_true-manual.html
+++ b/testing/web-platform/tests/core-aam/button_with_aria-haspopup_true-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/button_with_default_values_for_aria-pressed_and_aria-haspopup-manual.html b/testing/web-platform/tests/core-aam/button_with_default_values_for_aria-pressed_and_aria-haspopup-manual.html
index b36bb46822f72..fe9ca7bda9938 100644
--- a/testing/web-platform/tests/core-aam/button_with_default_values_for_aria-pressed_and_aria-haspopup-manual.html
+++ b/testing/web-platform/tests/core-aam/button_with_default_values_for_aria-pressed_and_aria-haspopup-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>button with default values for aria-pressed and aria-haspopup</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/button_with_defined_value_for_aria-pressed-manual.html b/testing/web-platform/tests/core-aam/button_with_defined_value_for_aria-pressed-manual.html
index 20c9287ee12a9..6088fcb1a296e 100644
--- a/testing/web-platform/tests/core-aam/button_with_defined_value_for_aria-pressed-manual.html
+++ b/testing/web-platform/tests/core-aam/button_with_defined_value_for_aria-pressed-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>button with defined value for aria-pressed</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/cell_new-manual.html b/testing/web-platform/tests/core-aam/cell_new-manual.html
index c6992e8ba6553..8ff93f10c8107 100644
--- a/testing/web-platform/tests/core-aam/cell_new-manual.html
+++ b/testing/web-platform/tests/core-aam/cell_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>cell NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/checkbox-manual.html b/testing/web-platform/tests/core-aam/checkbox-manual.html
index f92ab48892121..e9db3f3defabe 100644
--- a/testing/web-platform/tests/core-aam/checkbox-manual.html
+++ b/testing/web-platform/tests/core-aam/checkbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>checkbox</title>
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diff --git a/testing/web-platform/tests/core-aam/columnheader-manual.html b/testing/web-platform/tests/core-aam/columnheader-manual.html
index 017ebe92aa423..f4ce817f94a38 100644
--- a/testing/web-platform/tests/core-aam/columnheader-manual.html
+++ b/testing/web-platform/tests/core-aam/columnheader-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/combobox-manual.html b/testing/web-platform/tests/core-aam/combobox-manual.html
index 9d5b08c8438b2..44a11242efc33 100644
--- a/testing/web-platform/tests/core-aam/combobox-manual.html
+++ b/testing/web-platform/tests/core-aam/combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/complementary-manual.html b/testing/web-platform/tests/core-aam/complementary-manual.html
index a7e79c25fb4ae..db9b8acd7e506 100644
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@@ -3,7 +3,6 @@
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/contentinfo-manual.html b/testing/web-platform/tests/core-aam/contentinfo-manual.html
index 6288c8ffa4011..50b5269eb743c 100644
--- a/testing/web-platform/tests/core-aam/contentinfo-manual.html
+++ b/testing/web-platform/tests/core-aam/contentinfo-manual.html
@@ -3,7 +3,6 @@
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/definition-manual.html b/testing/web-platform/tests/core-aam/definition-manual.html
index 5564542db5116..4997caac37f94 100644
--- a/testing/web-platform/tests/core-aam/definition-manual.html
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diff --git a/testing/web-platform/tests/core-aam/dialog-manual.html b/testing/web-platform/tests/core-aam/dialog-manual.html
index f7aa26c69fa4d..24dd180aef416 100644
--- a/testing/web-platform/tests/core-aam/dialog-manual.html
+++ b/testing/web-platform/tests/core-aam/dialog-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/directory-manual.html b/testing/web-platform/tests/core-aam/directory-manual.html
index 1dcc0ed8614b4..6c9b46b6f4706 100644
--- a/testing/web-platform/tests/core-aam/directory-manual.html
+++ b/testing/web-platform/tests/core-aam/directory-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
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diff --git a/testing/web-platform/tests/core-aam/document-manual.html b/testing/web-platform/tests/core-aam/document-manual.html
index 6c37547c89905..5b9c27525748a 100644
--- a/testing/web-platform/tests/core-aam/document-manual.html
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
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diff --git a/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_display_none-manual.html b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_display_none-manual.html
index 2c6a355ea10dd..5cae26ef65b6b 100644
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+++ b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_display_none-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_visibility_hidden-manual.html b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_visibility_hidden-manual.html
index 0ebf066e9cb14..4bfa6cf830693 100644
--- a/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_visibility_hidden-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_css_visibility_hidden-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/exclude_element_hidden_with_html5_hidden-manual.html b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_html5_hidden-manual.html
index 6d3723112d549..c3394717728aa 100644
--- a/testing/web-platform/tests/core-aam/exclude_element_hidden_with_html5_hidden-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_element_hidden_with_html5_hidden-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_button-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_button-manual.html
index 27c218eac1a7c..63ea33452478b 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_checkbox_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_checkbox_new-manual.html
index 0bea0e6367a22..83997f4dd7e25 100644
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@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_img-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_img-manual.html
index 24c95828bf762..85c19ad92c8c6 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_img-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_math-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_math-manual.html
index e2b86bc529e6d..cf93519cea334 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_math-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemcheckbox_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemcheckbox_new-manual.html
index 3c69d07f063ce..e43f61498139a 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemcheckbox_new-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemradio_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemradio_new-manual.html
index 78b408c7c2eed..083af605ad820 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_menuitemradio_new-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_option_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_option_new-manual.html
index e6aafc7b73503..f880addb15f7d 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_option_new-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_progressbar-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_progressbar-manual.html
index 553d0cf3abd71..02ade36836308 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_progressbar-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_radio_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_radio_new-manual.html
index 856b1e8f0d076..05e408625dcc9 100644
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@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_scrollbar-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_scrollbar-manual.html
index 71d5ca5b5210d..e6d2b22c24d5a 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_scrollbar-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_separator-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_separator-manual.html
index a5ce33499683f..d1c924e09efb9 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_separator-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_separator-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_slider-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_slider-manual.html
index 59637656faba4..2c85f9d61a4ef 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_slider-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_slider-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
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     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_switch_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_switch_new-manual.html
index 89db6be0ac2a1..489519bc6318a 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_switch_new-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_switch_new-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_tab_new-manual.html b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_tab_new-manual.html
index 5424288fcb4c1..0ec68c6a38231 100644
--- a/testing/web-platform/tests/core-aam/exclude_presentational_children_of_tab_new-manual.html
+++ b/testing/web-platform/tests/core-aam/exclude_presentational_children_of_tab_new-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/feed_new-manual.html b/testing/web-platform/tests/core-aam/feed_new-manual.html
index 71f8c9045ada7..f00a737b30f61 100644
--- a/testing/web-platform/tests/core-aam/feed_new-manual.html
+++ b/testing/web-platform/tests/core-aam/feed_new-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>feed NEW</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/figure_new-manual.html b/testing/web-platform/tests/core-aam/figure_new-manual.html
index c2bbd39a7ca55..ce3dfefaea740 100644
--- a/testing/web-platform/tests/core-aam/figure_new-manual.html
+++ b/testing/web-platform/tests/core-aam/figure_new-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/form-manual.html b/testing/web-platform/tests/core-aam/form-manual.html
index 0664713d67fc8..64969c7031f53 100644
--- a/testing/web-platform/tests/core-aam/form-manual.html
+++ b/testing/web-platform/tests/core-aam/form-manual.html
@@ -3,7 +3,6 @@
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-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/grid-manual.html b/testing/web-platform/tests/core-aam/grid-manual.html
index 829f3d8614ce2..8754bb29104ae 100644
--- a/testing/web-platform/tests/core-aam/grid-manual.html
+++ b/testing/web-platform/tests/core-aam/grid-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/gridcell-manual.html b/testing/web-platform/tests/core-aam/gridcell-manual.html
index c698032a4b59a..ae147a9b3d47b 100644
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index da8251766496d..06e2e587f3694 100644
--- a/testing/web-platform/tests/core-aam/group-manual.html
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@@ -3,7 +3,6 @@
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index d68bb5325ed98..894e6a0564e61 100644
--- a/testing/web-platform/tests/core-aam/heading-manual.html
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index baa4f177af3a7..bcb81183624f3 100644
--- a/testing/web-platform/tests/core-aam/img-manual.html
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index 127fcb7717463..7eebef462c7f2 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-describedby-manual.html b/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-describedby-manual.html
index 9cf18620d675b..55be3789af9e0 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-details_new-manual.html b/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-details_new-manual.html
index 397ded19f3242..ec8cd0915a7de 100644
--- a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-details_new-manual.html
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index f279cddde2f23..67d9beb3a39e6 100644
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index 173d702564e2c..9847a81a02351 100644
--- a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-flowto-manual.html
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diff --git a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-labelledby-manual.html b/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-labelledby-manual.html
index 86a09cb7f209e..c7cdd0e37fd6d 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-owns-manual.html b/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-owns-manual.html
index baf2c17b3bcd4..540690d970672 100644
--- a/testing/web-platform/tests/core-aam/include_element_referenced_by_global_aria-owns-manual.html
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@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/include_element_that_is_focusable-manual.html b/testing/web-platform/tests/core-aam/include_element_that_is_focusable-manual.html
index c3e95405f12e3..88f8c1d3d6cc9 100644
--- a/testing/web-platform/tests/core-aam/include_element_that_is_focusable-manual.html
+++ b/testing/web-platform/tests/core-aam/include_element_that_is_focusable-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/include_element_with_id_inside_element_with_aria-activedescendant-manual.html b/testing/web-platform/tests/core-aam/include_element_with_id_inside_element_with_aria-activedescendant-manual.html
index cbae28e600329..fc0b654957659 100644
--- a/testing/web-platform/tests/core-aam/include_element_with_id_inside_element_with_aria-activedescendant-manual.html
+++ b/testing/web-platform/tests/core-aam/include_element_with_id_inside_element_with_aria-activedescendant-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>Include element with ID inside element with aria-activedescendant</title>
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-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/link-manual.html b/testing/web-platform/tests/core-aam/link-manual.html
index d83d0cf1a6ce7..a5ff107ea3f23 100644
--- a/testing/web-platform/tests/core-aam/link-manual.html
+++ b/testing/web-platform/tests/core-aam/link-manual.html
@@ -3,7 +3,6 @@
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/list-manual.html b/testing/web-platform/tests/core-aam/list-manual.html
index 81e8b2dc153fe..aac0d200076f3 100644
--- a/testing/web-platform/tests/core-aam/list-manual.html
+++ b/testing/web-platform/tests/core-aam/list-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/listbox_not_owned_by_or_child_of_combobox-manual.html b/testing/web-platform/tests/core-aam/listbox_not_owned_by_or_child_of_combobox-manual.html
index 58b302139f474..8e1db61a798cc 100644
--- a/testing/web-platform/tests/core-aam/listbox_not_owned_by_or_child_of_combobox-manual.html
+++ b/testing/web-platform/tests/core-aam/listbox_not_owned_by_or_child_of_combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>listbox not owned by or child of combobox</title>
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     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/listbox_owned_by_or_child_of_combobox-manual.html b/testing/web-platform/tests/core-aam/listbox_owned_by_or_child_of_combobox-manual.html
index 62a233ab73bce..7cabaa984e52c 100644
--- a/testing/web-platform/tests/core-aam/listbox_owned_by_or_child_of_combobox-manual.html
+++ b/testing/web-platform/tests/core-aam/listbox_owned_by_or_child_of_combobox-manual.html
@@ -3,7 +3,6 @@
   <head>
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diff --git a/testing/web-platform/tests/core-aam/listitem-manual.html b/testing/web-platform/tests/core-aam/listitem-manual.html
index 14dbec9230d8b..8b11eb4a8d39e 100644
--- a/testing/web-platform/tests/core-aam/listitem-manual.html
+++ b/testing/web-platform/tests/core-aam/listitem-manual.html
@@ -3,7 +3,6 @@
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index d997b95940e5a..a2156e2a71a1e 100644
--- a/testing/web-platform/tests/core-aam/log-manual.html
+++ b/testing/web-platform/tests/core-aam/log-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/main-manual.html b/testing/web-platform/tests/core-aam/main-manual.html
index 8d8e6ff7ee162..2ec25f1340320 100644
--- a/testing/web-platform/tests/core-aam/main-manual.html
+++ b/testing/web-platform/tests/core-aam/main-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/marquee-manual.html b/testing/web-platform/tests/core-aam/marquee-manual.html
index 064c8d256844b..522887bebcc6d 100644
--- a/testing/web-platform/tests/core-aam/marquee-manual.html
+++ b/testing/web-platform/tests/core-aam/marquee-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>marquee</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/math-manual.html b/testing/web-platform/tests/core-aam/math-manual.html
index 5fc96729a9507..f15e8f8b1bd37 100644
--- a/testing/web-platform/tests/core-aam/math-manual.html
+++ b/testing/web-platform/tests/core-aam/math-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/menu-manual.html b/testing/web-platform/tests/core-aam/menu-manual.html
index 0407d3ad50802..43ec797e7d404 100644
--- a/testing/web-platform/tests/core-aam/menu-manual.html
+++ b/testing/web-platform/tests/core-aam/menu-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
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     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/menu_child_of_menu_item-manual.html b/testing/web-platform/tests/core-aam/menu_child_of_menu_item-manual.html
index 723d2dfa10376..d3d37cecc52ea 100644
--- a/testing/web-platform/tests/core-aam/menu_child_of_menu_item-manual.html
+++ b/testing/web-platform/tests/core-aam/menu_child_of_menu_item-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/menubar-manual.html b/testing/web-platform/tests/core-aam/menubar-manual.html
index 88f323894e093..878f1da2df237 100644
--- a/testing/web-platform/tests/core-aam/menubar-manual.html
+++ b/testing/web-platform/tests/core-aam/menubar-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/menuitem_not_owned_by_or_child_of_group-manual.html b/testing/web-platform/tests/core-aam/menuitem_not_owned_by_or_child_of_group-manual.html
index f42d81fa05e9e..8f1cfbf4850cc 100644
--- a/testing/web-platform/tests/core-aam/menuitem_not_owned_by_or_child_of_group-manual.html
+++ b/testing/web-platform/tests/core-aam/menuitem_not_owned_by_or_child_of_group-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>menuitem not owned by or child of group</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/core-aam/menuitem_owned_by_or_child_of_group-manual.html b/testing/web-platform/tests/core-aam/menuitem_owned_by_or_child_of_group-manual.html
index 11d216fb514f1..c5d4c41c2be15 100644
--- a/testing/web-platform/tests/core-aam/menuitem_owned_by_or_child_of_group-manual.html
+++ b/testing/web-platform/tests/core-aam/menuitem_owned_by_or_child_of_group-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>menuitem owned by or child of group</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/menuitemcheckbox-manual.html b/testing/web-platform/tests/core-aam/menuitemcheckbox-manual.html
index 1e13e5ae86c11..6aa512877671b 100644
--- a/testing/web-platform/tests/core-aam/menuitemcheckbox-manual.html
+++ b/testing/web-platform/tests/core-aam/menuitemcheckbox-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>menuitemcheckbox</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
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diff --git a/testing/web-platform/tests/core-aam/menuitemradio-manual.html b/testing/web-platform/tests/core-aam/menuitemradio-manual.html
index 6d0832191df0b..7fa58d61ae975 100644
--- a/testing/web-platform/tests/core-aam/menuitemradio-manual.html
+++ b/testing/web-platform/tests/core-aam/menuitemradio-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>menuitemradio</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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diff --git a/testing/web-platform/tests/core-aam/navigation-manual.html b/testing/web-platform/tests/core-aam/navigation-manual.html
index 23994824662bc..18941196f3940 100644
--- a/testing/web-platform/tests/core-aam/navigation-manual.html
+++ b/testing/web-platform/tests/core-aam/navigation-manual.html
@@ -3,7 +3,6 @@
   <head>
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     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
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index 9f191a4b0bad3..3d5e660bc5f64 100644
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diff --git a/testing/web-platform/tests/core-aam/region_with_an_accessible_name_new-manual.html b/testing/web-platform/tests/core-aam/region_with_an_accessible_name_new-manual.html
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diff --git a/testing/web-platform/tests/core-aam/region_without_an_accessible_name_new-manual.html b/testing/web-platform/tests/core-aam/region_without_an_accessible_name_new-manual.html
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diff --git a/testing/web-platform/tests/core-aam/row_inside_treegrid-manual.html b/testing/web-platform/tests/core-aam/row_inside_treegrid-manual.html
index 8add16b431cde..2a708c5d26fcb 100644
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@@ -3,7 +3,6 @@
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index 687ae799e3ca9..7adea5a2c8bfc 100644
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index 463c4707595f5..97bd0a88b2ac7 100644
--- a/testing/web-platform/tests/core-aam/table_new-manual.html
+++ b/testing/web-platform/tests/core-aam/table_new-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/tablist-manual.html b/testing/web-platform/tests/core-aam/tablist-manual.html
index 71c7f3fb1d85a..93b8e17a8894d 100644
--- a/testing/web-platform/tests/core-aam/tablist-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/tabpanel-manual.html b/testing/web-platform/tests/core-aam/tabpanel-manual.html
index dd00381761b1b..684177890baa3 100644
--- a/testing/web-platform/tests/core-aam/tabpanel-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/term_new-manual.html b/testing/web-platform/tests/core-aam/term_new-manual.html
index a09cc8c517587..d369be924e7b5 100644
--- a/testing/web-platform/tests/core-aam/term_new-manual.html
+++ b/testing/web-platform/tests/core-aam/term_new-manual.html
@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_false-manual.html b/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_false-manual.html
index 662dfab377b03..f4c6aa144ce61 100644
--- a/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_false-manual.html
+++ b/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_false-manual.html
@@ -3,7 +3,6 @@
   <head>
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-    <link rel="stylesheet" href="/resources/testharness.css">
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diff --git a/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_true-manual.html b/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_true-manual.html
index 766a886b9dc17..e56910ea9a978 100644
--- a/testing/web-platform/tests/core-aam/textbox_when_aria-multiline_is_true-manual.html
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@@ -3,7 +3,6 @@
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index bea8052012145..8a1f93dc092fc 100644
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index b0e8a46abf5bb..c93e531e741da 100644
--- a/testing/web-platform/tests/core-aam/toolbar-manual.html
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index 066f30d223af2..b815d380e263f 100644
--- a/testing/web-platform/tests/core-aam/tooltip-manual.html
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index ba347dcc0b5d1..5a15b46e4f8fe 100644
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index 44440b4f033ce..2d144aaf9e898 100644
--- a/testing/web-platform/tests/core-aam/treegrid-manual.html
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diff --git a/testing/web-platform/tests/core-aam/treeitem-manual.html b/testing/web-platform/tests/core-aam/treeitem-manual.html
index 64d738b55894c..1b1654561af36 100644
--- a/testing/web-platform/tests/core-aam/treeitem-manual.html
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diff --git a/testing/web-platform/tests/css/css-fonts/variations/font-weight-matching-installed-fonts.html b/testing/web-platform/tests/css/css-fonts/variations/font-weight-matching-installed-fonts.html
index 9d08d5b472ea5..e00e3172c662f 100644
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@@ -4,7 +4,6 @@
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     <script src="/resources/testharness.js"></script>
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@@ -2,7 +2,6 @@
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+++ b/testing/web-platform/tests/dpub-aam/doc-errata-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-errata</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
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index df11392abff97..32c32d812cc8d 100644
--- a/testing/web-platform/tests/dpub-aam/doc-example-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-example-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-example</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
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     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-footnote-manual.html b/testing/web-platform/tests/dpub-aam/doc-footnote-manual.html
index ad5f1f7116e41..c865fa1016133 100644
--- a/testing/web-platform/tests/dpub-aam/doc-footnote-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-footnote-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-footnote</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-foreword-manual.html b/testing/web-platform/tests/dpub-aam/doc-foreword-manual.html
index c56d314462239..2774b50ef979c 100644
--- a/testing/web-platform/tests/dpub-aam/doc-foreword-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-foreword-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-foreword</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-glossary-manual.html b/testing/web-platform/tests/dpub-aam/doc-glossary-manual.html
index b22e3be66c5e7..8a5baeef63ba8 100644
--- a/testing/web-platform/tests/dpub-aam/doc-glossary-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-glossary-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-glossary</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-glossref-manual.html b/testing/web-platform/tests/dpub-aam/doc-glossref-manual.html
index 6a03b871c3295..99b8edd2172be 100644
--- a/testing/web-platform/tests/dpub-aam/doc-glossref-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-glossref-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-glossref</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-index-manual.html b/testing/web-platform/tests/dpub-aam/doc-index-manual.html
index b24abfa29385f..39491e0313417 100644
--- a/testing/web-platform/tests/dpub-aam/doc-index-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-index-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-index</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-introduction-manual.html b/testing/web-platform/tests/dpub-aam/doc-introduction-manual.html
index e720f74c48ead..fadf2d97f5b97 100644
--- a/testing/web-platform/tests/dpub-aam/doc-introduction-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-introduction-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-introduction</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-noteref-manual.html b/testing/web-platform/tests/dpub-aam/doc-noteref-manual.html
index f78af805eafac..3f053bce693a8 100644
--- a/testing/web-platform/tests/dpub-aam/doc-noteref-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-noteref-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-noteref</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-notice-manual.html b/testing/web-platform/tests/dpub-aam/doc-notice-manual.html
index d3135a763166a..0656b539d6610 100644
--- a/testing/web-platform/tests/dpub-aam/doc-notice-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-notice-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-notice</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-pagebreak-manual.html b/testing/web-platform/tests/dpub-aam/doc-pagebreak-manual.html
index 1bafd77cbeb26..239094831814e 100644
--- a/testing/web-platform/tests/dpub-aam/doc-pagebreak-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-pagebreak-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-pagebreak</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-pagelist-manual.html b/testing/web-platform/tests/dpub-aam/doc-pagelist-manual.html
index 24bd42e0c24f5..33993fe847761 100644
--- a/testing/web-platform/tests/dpub-aam/doc-pagelist-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-pagelist-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-pagelist</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-part-manual.html b/testing/web-platform/tests/dpub-aam/doc-part-manual.html
index bc06f0ef43a8d..997be1e4a8eed 100644
--- a/testing/web-platform/tests/dpub-aam/doc-part-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-part-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-part</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-preface-manual.html b/testing/web-platform/tests/dpub-aam/doc-preface-manual.html
index 0a2bdbfe6a00e..8ed5d3b153716 100644
--- a/testing/web-platform/tests/dpub-aam/doc-preface-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-preface-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-preface</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-prologue-manual.html b/testing/web-platform/tests/dpub-aam/doc-prologue-manual.html
index 077cfb832e0db..b806c2e9650fb 100644
--- a/testing/web-platform/tests/dpub-aam/doc-prologue-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-prologue-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-prologue</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-pullquote-manual.html b/testing/web-platform/tests/dpub-aam/doc-pullquote-manual.html
index 543c4ed903569..b52c970df76c5 100644
--- a/testing/web-platform/tests/dpub-aam/doc-pullquote-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-pullquote-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-pullquote</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-qna-manual.html b/testing/web-platform/tests/dpub-aam/doc-qna-manual.html
index 8b9c4666d148e..a334d64939aeb 100644
--- a/testing/web-platform/tests/dpub-aam/doc-qna-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-qna-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-qna</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-subtitle-manual.html b/testing/web-platform/tests/dpub-aam/doc-subtitle-manual.html
index 551891983d5ec..217f61284c761 100644
--- a/testing/web-platform/tests/dpub-aam/doc-subtitle-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-subtitle-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-subtitle</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-tip-manual.html b/testing/web-platform/tests/dpub-aam/doc-tip-manual.html
index ec59b0f0b5c0e..dda02b6798596 100644
--- a/testing/web-platform/tests/dpub-aam/doc-tip-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-tip-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-tip</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aam/doc-toc-manual.html b/testing/web-platform/tests/dpub-aam/doc-toc-manual.html
index c3969e232205a..a06a58dfa6544 100644
--- a/testing/web-platform/tests/dpub-aam/doc-toc-manual.html
+++ b/testing/web-platform/tests/dpub-aam/doc-toc-manual.html
@@ -2,7 +2,6 @@
 <html>
   <head>
     <title>doc-toc</title>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/dpub-aria/inuse-manual.html b/testing/web-platform/tests/dpub-aria/inuse-manual.html
index 1609337468ad3..cd6af1e7358b8 100644
--- a/testing/web-platform/tests/dpub-aria/inuse-manual.html
+++ b/testing/web-platform/tests/dpub-aria/inuse-manual.html
@@ -2,7 +2,6 @@
 <html>
 <head>
   <title>Check for Dpub Vocabulary Role Usage</title>
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-document_on_html_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-document_on_html_element-manual.html
index 293ad2ea842f9..cc9b4077d13d9 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-document_on_html_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-document_on_html_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-document on HTML element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-document_on_svg_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-document_on_svg_element-manual.html
index 4984bc353eb39..1b6144674a3cf 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-document_on_svg_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-document_on_svg_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-document on SVG element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-object_on_html_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-object_on_html_element-manual.html
index 19979b2f32535..074fe51939f11 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-object_on_html_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-object_on_html_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-object on HTML element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-object_on_svg_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-object_on_svg_element-manual.html
index 5c2cf28e4478b..d326ec5b649a1 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-object_on_svg_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-object_on_svg_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-object on SVG element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-symbol_on_html_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-symbol_on_html_element-manual.html
index 3b9c77fffdc4f..913a7d130dc7b 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-symbol_on_html_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-symbol_on_html_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-symbol on HTML element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/graphics-aam/graphics-symbol_on_svg_element-manual.html b/testing/web-platform/tests/graphics-aam/graphics-symbol_on_svg_element-manual.html
index 6663225f82cc4..78848269d2242 100644
--- a/testing/web-platform/tests/graphics-aam/graphics-symbol_on_svg_element-manual.html
+++ b/testing/web-platform/tests/graphics-aam/graphics-symbol_on_svg_element-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>graphics-symbol on SVG element</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/html/editing/dnd/datastore/015-manual.html b/testing/web-platform/tests/html/editing/dnd/datastore/015-manual.html
index 6bb3cad3aeecd..604c1d43709b4 100644
--- a/testing/web-platform/tests/html/editing/dnd/datastore/015-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/datastore/015-manual.html
@@ -9,6 +9,7 @@
 blockquote + div { clear: left; }
     </style>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true,explicit_timeout:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/html/editing/dnd/events/events-cross-document-suite-manual.html b/testing/web-platform/tests/html/editing/dnd/events/events-cross-document-suite-manual.html
index 1a07a943a7fe1..9428a87760421 100644
--- a/testing/web-platform/tests/html/editing/dnd/events/events-cross-document-suite-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/events/events-cross-document-suite-manual.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <title>drag &amp; drop - event sequence for cross-document drag</title>
 <script type="text/javascript" src="/resources/testharness.js"></script>
+<script type="text/javascript" src="/resources/testharnessreport.js"></script>
 <script>
 var events = new Array();
 </script>
diff --git a/testing/web-platform/tests/html/editing/dnd/events/events-file-suite-manual.html b/testing/web-platform/tests/html/editing/dnd/events/events-file-suite-manual.html
index 380247b8a1bc9..22a66f5e9a687 100644
--- a/testing/web-platform/tests/html/editing/dnd/events/events-file-suite-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/events/events-file-suite-manual.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <title>drag &amp; drop - event sequence for file drops</title>
 <script type="text/javascript" src="/resources/testharness.js"></script>
+<script type="text/javascript" src="/resources/testharnessreport.js"></script>
 <style type="text/css">
   /* use margins instead of padding to make sure the body begins at the top of the page */
   html, body {
diff --git a/testing/web-platform/tests/html/editing/dnd/events/events-suite-manual.html b/testing/web-platform/tests/html/editing/dnd/events/events-suite-manual.html
index b848fa9467db4..16c6583dc82a7 100644
--- a/testing/web-platform/tests/html/editing/dnd/events/events-suite-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/events/events-suite-manual.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <title>drag &amp; drop - event sequence for draggable elements</title>
 <script type="text/javascript" src="/resources/testharness.js"></script>
+<script type="text/javascript" src="/resources/testharnessreport.js"></script>
 <style type="text/css">
   /* use margins instead of padding to make sure the body begins at the top of the page */
   html, body {
diff --git a/testing/web-platform/tests/html/editing/dnd/synthetic/005-manual.html b/testing/web-platform/tests/html/editing/dnd/synthetic/005-manual.html
index f3bb221b7f2ab..4e0b00dab2b0c 100644
--- a/testing/web-platform/tests/html/editing/dnd/synthetic/005-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/synthetic/005-manual.html
@@ -9,6 +9,7 @@
 blockquote + div { clear: left; }
     </style>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true,explicit_timeout:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/html/editing/dnd/synthetic/006-manual.html b/testing/web-platform/tests/html/editing/dnd/synthetic/006-manual.html
index 2007116668aff..e7d1677b14b30 100644
--- a/testing/web-platform/tests/html/editing/dnd/synthetic/006-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/synthetic/006-manual.html
@@ -9,6 +9,7 @@
 blockquote + div { clear: left; }
     </style>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true,explicit_timeout:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/html/editing/dnd/target-origin/001-manual.html b/testing/web-platform/tests/html/editing/dnd/target-origin/001-manual.html
index 13c6864d8bdfb..4622c76a92f1d 100644
--- a/testing/web-platform/tests/html/editing/dnd/target-origin/001-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/target-origin/001-manual.html
@@ -6,6 +6,7 @@
 blockquote { height: 100px; width: 100px; background: orange; margin: 0; padding: 0; }
     </style>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/html/editing/dnd/target-origin/002-manual.html b/testing/web-platform/tests/html/editing/dnd/target-origin/002-manual.html
index c4e8acdd9c58a..d1615090660e3 100644
--- a/testing/web-platform/tests/html/editing/dnd/target-origin/002-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/target-origin/002-manual.html
@@ -9,6 +9,7 @@
 blockquote + div { clear: left; }
     </style>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/html/editing/dnd/target-origin/101-manual.html b/testing/web-platform/tests/html/editing/dnd/target-origin/101-manual.html
index e5bbd7fa3d2a5..23f5cf9baf24b 100644
--- a/testing/web-platform/tests/html/editing/dnd/target-origin/101-manual.html
+++ b/testing/web-platform/tests/html/editing/dnd/target-origin/101-manual.html
@@ -10,6 +10,7 @@
     </style>
     <script type="text/javascript" src="../resources/crossorigin.sub.js"></script>
     <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
     <script type="text/javascript">
 setup(function () {},{explicit_done:true});
 window.onload = function () {
diff --git a/testing/web-platform/tests/media-source/generate-config-change-tests.py b/testing/web-platform/tests/media-source/generate-config-change-tests.py
index 4edb925b448af..6ab2c8bf46b8c 100755
--- a/testing/web-platform/tests/media-source/generate-config-change-tests.py
+++ b/testing/web-platform/tests/media-source/generate-config-change-tests.py
@@ -83,7 +83,6 @@
         <script src="/w3c/resources/testharnessreport.js"></script>
         <script src="mediasource-util.js"></script>
         <script src="mediasource-config-changes.js"></script>
-        <link rel="stylesheet" href="/w3c/resources/testharness.css">
     </head>
     <body>
         <div id="log"></div>
diff --git a/testing/web-platform/tests/page-visibility/test_minimize-manual.html b/testing/web-platform/tests/page-visibility/test_minimize-manual.html
index 28e8486769c21..27fd0d7cefafa 100644
--- a/testing/web-platform/tests/page-visibility/test_minimize-manual.html
+++ b/testing/web-platform/tests/page-visibility/test_minimize-manual.html
@@ -5,6 +5,7 @@
         <title>Page Visibility API Operation While Minimizing Browser Window</title>
         <meta name="flags" content="interact" />
         <script type="text/javascript" src="/resources/testharness.js"></script>
+        <script type="text/javascript" src="/resources/testharnessreport.js"></script>
         <script type="text/javascript" src="resources/pagevistestharness.js"></script>
 
     </head>
diff --git a/testing/web-platform/tests/page-visibility/test_tab_state_change-manual.html b/testing/web-platform/tests/page-visibility/test_tab_state_change-manual.html
index c701e507862a8..75d1da6e93751 100644
--- a/testing/web-platform/tests/page-visibility/test_tab_state_change-manual.html
+++ b/testing/web-platform/tests/page-visibility/test_tab_state_change-manual.html
@@ -5,6 +5,7 @@
         <title>Page Visibility API Operation While Changing Tabs</title>
         <meta name="flags" content="interact" />
         <script type="text/javascript" src="/resources/testharness.js"></script>
+        <script type="text/javascript" src="/resources/testharnessreport.js"></script>
         <script type="text/javascript" src="resources/pagevistestharness.js"></script>
 
     </head>
diff --git a/testing/web-platform/tests/pointerlock/movementX_Y_basic-manual.html b/testing/web-platform/tests/pointerlock/movementX_Y_basic-manual.html
index c058d24a6e53d..083b7075decf4 100644
--- a/testing/web-platform/tests/pointerlock/movementX_Y_basic-manual.html
+++ b/testing/web-platform/tests/pointerlock/movementX_Y_basic-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     #status-log {
         margin: 10px 0;
diff --git a/testing/web-platform/tests/pointerlock/movementX_Y_no-jumps-manual.html b/testing/web-platform/tests/pointerlock/movementX_Y_no-jumps-manual.html
index 9c8fabd28c9fa..11b8d2a49e0a3 100644
--- a/testing/web-platform/tests/pointerlock/movementX_Y_no-jumps-manual.html
+++ b/testing/web-platform/tests/pointerlock/movementX_Y_no-jumps-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     #status-log {
         margin: 10px 0;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_basic-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_basic-manual.html
index d926318abeefd..141b349cf5424 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_basic-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_basic-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_fullscreen-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_fullscreen-manual.html
index 7ce91ad169041..19f4cbeee9f35 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_fullscreen-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_fullscreen-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_indefinite-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_indefinite-manual.html
index 0db1227ad13db..96d5f94e6595d 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_indefinite-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_indefinite-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_leave_Tab-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_leave_Tab-manual.html
index 198e2fe63d748..f32c71abe5bb7 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_leave_Tab-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_leave_Tab-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_leave_UA-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_leave_UA-manual.html
index e1440084479f9..8373a345ea03c 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_leave_UA-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_leave_UA-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/pointerlock/pointerlock_remove_target-manual.html b/testing/web-platform/tests/pointerlock/pointerlock_remove_target-manual.html
index 2103650904827..a38b06e120535 100644
--- a/testing/web-platform/tests/pointerlock/pointerlock_remove_target-manual.html
+++ b/testing/web-platform/tests/pointerlock/pointerlock_remove_target-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <style type="text/css">
     button {
         color: blue;
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnectionList_onconnectionavailable-manual.https.html b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnectionList_onconnectionavailable-manual.https.html
index 84971cbdf63ba..9b75a85e9f699 100644
--- a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnectionList_onconnectionavailable-manual.https.html
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnectionList_onconnectionavailable-manual.https.html
@@ -3,7 +3,6 @@
 <title>Monitoring incoming presentation connections</title>
 <link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs">
 <link rel="help" href="https://w3c.github.io/presentation-api/#monitoring-incoming-presentation-connections">
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="common.js"></script>
 <script src="support/stash.js"></script>
 <style>
@@ -75,4 +74,4 @@
         connection.terminate();
     });
   };
-</script>
\ No newline at end of file
+</script>
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onclose-manual.https.html b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onclose-manual.https.html
index d6baad1c285d5..50585f781324f 100644
--- a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onclose-manual.https.html
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onclose-manual.https.html
@@ -3,7 +3,6 @@
 <title>Closing a PresentationConnection</title>
 <link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs">
 <link rel="help" href="https://w3c.github.io/presentation-api/#closing-a-presentationconnection">
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="common.js"></script>
 <script src="support/stash.js"></script>
 <style>
@@ -82,4 +81,4 @@
         connection.terminate();
     });
   };
-</script>
\ No newline at end of file
+</script>
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onmessage-manual.https.html b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onmessage-manual.https.html
index 4b05cdc9e8958..53451a6ceffea 100644
--- a/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onmessage-manual.https.html
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/PresentationConnection_onmessage-manual.https.html
@@ -3,7 +3,6 @@
 <title>Receiving a message through PresentationConnection</title>
 <link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs/">
 <link rel="help" href="http://w3c.github.io/presentation-api/#receiving-a-message-through-presentationconnection">
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="common.js"></script>
 <script src="support/stash.js"></script>
 
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/idlharness-manual.https.html b/testing/web-platform/tests/presentation-api/receiving-ua/idlharness-manual.https.html
index 079bb094acffb..c7bd7344d5365 100644
--- a/testing/web-platform/tests/presentation-api/receiving-ua/idlharness-manual.https.html
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/idlharness-manual.https.html
@@ -3,7 +3,6 @@
 <title>Presentation API IDL tests for Receiving User Agent</title>
 <link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs">
 <link rel="help" href="http://w3c.github.io/presentation-api/#dfn-receiving-user-agent">
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="common.js"></script>
 <script src="support/stash.js"></script>
 
diff --git a/testing/web-platform/tests/screen-orientation/page-visibility-manual.html b/testing/web-platform/tests/screen-orientation/page-visibility-manual.html
index 95633ba1240c2..cc63279217806 100644
--- a/testing/web-platform/tests/screen-orientation/page-visibility-manual.html
+++ b/testing/web-platform/tests/screen-orientation/page-visibility-manual.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
 <body>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <meta name='flags' content='interact'>
-<meta name="timeout" content="long">
 <p>Switch the page to background, then switch back in a minute.</p>
 <iframe src='about:blank'></iframe>
 <script>
diff --git a/testing/web-platform/tests/tools/lint/lint.py b/testing/web-platform/tests/tools/lint/lint.py
index 249856d8cf202..41d78da315775 100644
--- a/testing/web-platform/tests/tools/lint/lint.py
+++ b/testing/web-platform/tests/tools/lint/lint.py
@@ -443,7 +443,7 @@ def check_parsed(repo_root, path, f):
             not source_file.spec_links):
             return [("MISSING-LINK", "Testcase file must have a link to a spec", path, None)]
 
-    if source_file.name_is_non_test or source_file.name_is_manual:
+    if source_file.name_is_non_test:
         return []
 
     if source_file.markup_type is None:
@@ -453,10 +453,10 @@ def check_parsed(repo_root, path, f):
         return [("PARSE-FAILED", "Unable to parse file", path, None)]
 
     if source_file.type == "manual" and not source_file.name_is_manual:
-        return [("CONTENT-MANUAL", "Manual test whose filename doesn't end in '-manual'", path, None)]
+        errors.append(("CONTENT-MANUAL", "Manual test whose filename doesn't end in '-manual'", path, None))
 
     if source_file.type == "visual" and not source_file.name_is_visual:
-        return [("CONTENT-VISUAL", "Visual test whose filename doesn't end in '-visual'", path, None)]
+        errors.append(("CONTENT-VISUAL", "Visual test whose filename doesn't end in '-visual'", path, None))
 
     for reftest_node in source_file.reftest_nodes:
         href = reftest_node.attrib.get("href", "").strip(space_chars)
diff --git a/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness-interact.html b/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness-interact.html
new file mode 100644
index 0000000000000..a50ef983a939d
--- /dev/null
+++ b/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness-interact.html
@@ -0,0 +1,5 @@
+<!doctype html>
+<link rel=help href="https://www.w3.org/TR/CSS2/visufx.html#overflow-clipping">
+<meta name=flags content=interact>
+<script src="../../../resources/testharness.js"></script>
+<script src="../../../resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness.html b/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness.html
new file mode 100644
index 0000000000000..f15649e3aa4a5
--- /dev/null
+++ b/testing/web-platform/tests/tools/lint/tests/dummy/css/css-unique/relative-testharness.html
@@ -0,0 +1,4 @@
+<!doctype html>
+<link rel=help href="https://www.w3.org/TR/CSS2/visufx.html#overflow-clipping">
+<script src="../../../resources/testharness.js"></script>
+<script src="../../../resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/tools/lint/tests/dummy/tests/relative-testharness-manual.html b/testing/web-platform/tests/tools/lint/tests/dummy/tests/relative-testharness-manual.html
new file mode 100644
index 0000000000000..15693b990c1d5
--- /dev/null
+++ b/testing/web-platform/tests/tools/lint/tests/dummy/tests/relative-testharness-manual.html
@@ -0,0 +1,3 @@
+<!doctype html>
+<script src="../../../resources/testharness.js"></script>
+<script src="../../../resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/tools/lint/tests/test_lint.py b/testing/web-platform/tests/tools/lint/tests/test_lint.py
index 0a96b2968bb1f..2899b1dfa233f 100644
--- a/testing/web-platform/tests/tools/lint/tests/test_lint.py
+++ b/testing/web-platform/tests/tools/lint/tests/test_lint.py
@@ -245,6 +245,29 @@ def test_ref_same_file_path(caplog):
     assert "same_file_path.html" in caplog.text
 
 
+def test_manual_path_testharness(caplog):
+    rv = lint(_dummy_repo, ["tests/relative-testharness-manual.html"], "normal")
+    assert rv == 2
+    assert "TESTHARNESS-PATH" in caplog.text
+    assert "TESTHARNESSREPORT-PATH" in caplog.text
+
+
+def test_css_visual_path_testharness(caplog):
+    rv = lint(_dummy_repo, ["css/css-unique/relative-testharness.html"], "normal")
+    assert rv == 3
+    assert "CONTENT-VISUAL" in caplog.text
+    assert "TESTHARNESS-PATH" in caplog.text
+    assert "TESTHARNESSREPORT-PATH" in caplog.text
+
+
+def test_css_manual_path_testharness(caplog):
+    rv = lint(_dummy_repo, ["css/css-unique/relative-testharness-interact.html"], "normal")
+    assert rv == 3
+    assert "CONTENT-MANUAL" in caplog.text
+    assert "TESTHARNESS-PATH" in caplog.text
+    assert "TESTHARNESSREPORT-PATH" in caplog.text
+
+
 def test_lint_passing_and_failing(caplog):
     with _mock_lint("check_path") as mocked_check_path:
         with _mock_lint("check_file_contents") as mocked_check_file_contents:
diff --git a/testing/web-platform/tests/touch-events/multi-touch-interfaces-manual.html b/testing/web-platform/tests/touch-events/multi-touch-interfaces-manual.html
index e593fd0b9611a..e9f1b91c4862e 100644
--- a/testing/web-platform/tests/touch-events/multi-touch-interfaces-manual.html
+++ b/testing/web-platform/tests/touch-events/multi-touch-interfaces-manual.html
@@ -19,6 +19,7 @@
 <title>Touch Events Multi-Touch Interface Tests</title>
 <meta name="viewport" content="width=device-width">
 <script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
 <script>
     setup({explicit_done: true});
 
diff --git a/testing/web-platform/tests/touch-events/single-touch-manual.html b/testing/web-platform/tests/touch-events/single-touch-manual.html
index f1f643cb55e68..1b47a64c157ac 100644
--- a/testing/web-platform/tests/touch-events/single-touch-manual.html
+++ b/testing/web-platform/tests/touch-events/single-touch-manual.html
@@ -15,6 +15,7 @@
   <title>Touch Events Single Touch Tests</title>
   <meta name="viewport" content="width=device-width">
   <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
   <script>
     setup({explicit_done: true});
 
diff --git a/testing/web-platform/tests/wai-aria/alertdialog_modal_false-manual.html b/testing/web-platform/tests/wai-aria/alertdialog_modal_false-manual.html
index 5a5829e924e73..ee64c9dbf0d28 100644
--- a/testing/web-platform/tests/wai-aria/alertdialog_modal_false-manual.html
+++ b/testing/web-platform/tests/wai-aria/alertdialog_modal_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>alertdialog modal false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/alertdialog_modal_true-manual.html b/testing/web-platform/tests/wai-aria/alertdialog_modal_true-manual.html
index b86bcae6c9ff8..4affe2fd5e61d 100644
--- a/testing/web-platform/tests/wai-aria/alertdialog_modal_true-manual.html
+++ b/testing/web-platform/tests/wai-aria/alertdialog_modal_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>alertdialog modal true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/application_activedescendant-manual.html b/testing/web-platform/tests/wai-aria/application_activedescendant-manual.html
index 4e256bd51e6f4..a6ef85ac3dd1a 100644
--- a/testing/web-platform/tests/wai-aria/application_activedescendant-manual.html
+++ b/testing/web-platform/tests/wai-aria/application_activedescendant-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>application activedescendant</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
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index b852323603022..d923c84dea717 100644
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@@ -3,7 +3,6 @@
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index 471e718c2ecc5..ecf95bb64fc1f 100644
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+++ b/testing/web-platform/tests/wai-aria/aria-current_not_declared-manual.html
@@ -3,7 +3,6 @@
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index 84e0b60f60d07..d3f1eae005212 100644
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@@ -3,7 +3,6 @@
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index 0438ef5d28028..b15f5ec13adc8 100644
--- a/testing/web-platform/tests/wai-aria/aria-current_with_value_date-manual.html
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@@ -3,7 +3,6 @@
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index aac8e63f7872d..e8cf762c0e7af 100644
--- a/testing/web-platform/tests/wai-aria/aria-current_with_value_location-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/aria-current_with_value_page-manual.html b/testing/web-platform/tests/wai-aria/aria-current_with_value_page-manual.html
index 4ff50ac1b405b..ba48b738cc068 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/aria-current_with_value_step-manual.html b/testing/web-platform/tests/wai-aria/aria-current_with_value_step-manual.html
index 812ec03685495..6f4d5986c610a 100644
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@@ -3,7 +3,6 @@
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index 3362af00dd645..046fb817695d4 100644
--- a/testing/web-platform/tests/wai-aria/aria-current_with_value_time-manual.html
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@@ -3,7 +3,6 @@
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index bf7377705d7c1..3ce799f8b2cfe 100644
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index 271c085eb353b..c017a000a114d 100644
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@@ -3,7 +3,6 @@
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index ff960795b40e2..9c89dc3fa993f 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/article_not_in_feed_posinset_and_setsize-manual.html b/testing/web-platform/tests/wai-aria/article_not_in_feed_posinset_and_setsize-manual.html
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index e69e6c917ae2c..8ba0a22a8d4d7 100644
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@@ -3,7 +3,6 @@
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@@ -3,7 +3,6 @@
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@@ -3,7 +3,6 @@
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index 52d325ac4b733..57c8efbde24d1 100644
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@@ -3,7 +3,6 @@
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@@ -3,7 +3,6 @@
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index 261f448379dd0..9378993f55817 100644
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@@ -3,7 +3,6 @@
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@@ -3,7 +3,6 @@
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@@ -3,7 +3,6 @@
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index 5dd9371203ca6..96d7095d4ded7 100644
--- a/testing/web-platform/tests/wai-aria/button_haspopup_unspecified-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/button_roledescription_empty-manual.html b/testing/web-platform/tests/wai-aria/button_roledescription_empty-manual.html
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diff --git a/testing/web-platform/tests/wai-aria/button_roledescription_valid-manual.html b/testing/web-platform/tests/wai-aria/button_roledescription_valid-manual.html
index 34cbc9ed8ae5e..cdcf6071e619c 100644
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diff --git a/testing/web-platform/tests/wai-aria/button_roledescription_whitespace_only-manual.html b/testing/web-platform/tests/wai-aria/button_roledescription_whitespace_only-manual.html
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@@ -3,7 +3,6 @@
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index a9b83ff49f464..fa120dc5e43d8 100644
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index c225ab3936952..a7c65fed3d49b 100644
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index 5730d157f525a..057918c6b0cd8 100644
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index b2a1901da851c..2c05e6ea71f99 100644
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diff --git a/testing/web-platform/tests/wai-aria/cell_aria-colspan_2_on_td_with_html_colspan_not_specified-manual.html b/testing/web-platform/tests/wai-aria/cell_aria-colspan_2_on_td_with_html_colspan_not_specified-manual.html
index 980f5008bb12d..06212078b74d0 100644
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diff --git a/testing/web-platform/tests/wai-aria/cell_aria-rowspan_2_on_div-manual.html b/testing/web-platform/tests/wai-aria/cell_aria-rowspan_2_on_div-manual.html
index 4abd0de0b2975..e94303848dac7 100644
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index 0fed9aedeedb8..f1572046f29e7 100644
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index e9c5bd712c8e3..0978186febafc 100644
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index 0c3895af16464..02003065e09b8 100644
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diff --git a/testing/web-platform/tests/wai-aria/cell_rowindex_4-manual.html b/testing/web-platform/tests/wai-aria/cell_rowindex_4-manual.html
index 14a9247ff6604..ea2937efcbfa0 100644
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index dcb1a8b1f6cbb..558dc8e3912da 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/checkbox_readonly_true-manual.html b/testing/web-platform/tests/wai-aria/checkbox_readonly_true-manual.html
index 6718fada7a5a4..f3c879038f75f 100644
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diff --git a/testing/web-platform/tests/wai-aria/checkbox_readonly_unspecified-manual.html b/testing/web-platform/tests/wai-aria/checkbox_readonly_unspecified-manual.html
index f8de2099e3f68..583985f000958 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_div-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_div-manual.html
index 1797d47a91c6d..4789ced84d260 100644
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+++ b/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_div-manual.html
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index 586ff2982d49c..2ad8cb4bed9d9 100644
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_th_html_colspan_3_with_three_actual_columns-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_th_html_colspan_3_with_three_actual_columns-manual.html
index fa7bf0bed719a..3ac8701f5d7b6 100644
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_th_with_html_colspan_not_specified-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-colspan_2_on_th_with_html_colspan_not_specified-manual.html
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_div-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_div-manual.html
index e3431e42b88f5..00c00683924fe 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_th_html_rowspan_3_with_three_actual_rows-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_th_html_rowspan_3_with_three_actual_rows-manual.html
index 25d827e85d457..6327e5fb4ec86 100644
--- a/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_th_html_rowspan_3_with_three_actual_rows-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_th_with_html_rowspan_not_specified-manual.html b/testing/web-platform/tests/wai-aria/columnheader_aria-rowspan_2_on_th_with_html_rowspan_not_specified-manual.html
index a029e6b600df7..425eb5b15e0ce 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_colindex_4-manual.html b/testing/web-platform/tests/wai-aria/columnheader_colindex_4-manual.html
index d8d0587845fd0..f44e8343fb055 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_rowindex_4-manual.html b/testing/web-platform/tests/wai-aria/columnheader_rowindex_4-manual.html
index 665d344dc3811..7ab7e9c8d0f1f 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_selected_false_not_automatically_propagated-manual.html b/testing/web-platform/tests/wai-aria/columnheader_selected_false_not_automatically_propagated-manual.html
index 92cfc2e753c23..7624f2a3b80b6 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/columnheader_selected_true_not_automatically_propagated-manual.html b/testing/web-platform/tests/wai-aria/columnheader_selected_true_not_automatically_propagated-manual.html
index 32ce45ca7a264..1bc364cb884c3 100644
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diff --git a/testing/web-platform/tests/wai-aria/combobox_controls_an_invalid_id-manual.html b/testing/web-platform/tests/wai-aria/combobox_controls_an_invalid_id-manual.html
index 88b4229fff9f9..91188d8e3ca5c 100644
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@@ -3,7 +3,6 @@
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index 4d985a34e4427..d9cf618d9b55c 100644
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@@ -3,7 +3,6 @@
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index 5bfcb9fbecf38..2b0ca94745a05 100644
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@@ -3,7 +3,6 @@
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index 76ad36ee87a3c..a3929cf79e73a 100644
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@@ -3,7 +3,6 @@
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index 135459591fb3d..e1c9084fd5408 100644
--- a/testing/web-platform/tests/wai-aria/combobox_haspopup_listbox-manual.html
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@@ -3,7 +3,6 @@
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index 85faaf317b154..a9439ed496ac8 100644
--- a/testing/web-platform/tests/wai-aria/combobox_haspopup_menu-manual.html
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@@ -3,7 +3,6 @@
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index ea2d91680b5e9..a0602b520f720 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_haspopup_true-manual.html b/testing/web-platform/tests/wai-aria/combobox_haspopup_true-manual.html
index f087508a5c390..c7548ce5cd3b9 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_haspopup_unspecified-manual.html b/testing/web-platform/tests/wai-aria/combobox_haspopup_unspecified-manual.html
index a60e9a1ef0264..cd61076fb4e3a 100644
--- a/testing/web-platform/tests/wai-aria/combobox_haspopup_unspecified-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_orientation_horizontal-manual.html b/testing/web-platform/tests/wai-aria/combobox_orientation_horizontal-manual.html
index 3831f41d9d086..a5bcc700eca6e 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_orientation_unspecified-manual.html b/testing/web-platform/tests/wai-aria/combobox_orientation_unspecified-manual.html
index b37568df299b2..20bd53d8d118e 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_orientation_vertical-manual.html b/testing/web-platform/tests/wai-aria/combobox_orientation_vertical-manual.html
index a1a0b83e26894..189345c4151bb 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_readonly_false-manual.html b/testing/web-platform/tests/wai-aria/combobox_readonly_false-manual.html
index 4a87a4cb89640..978ab11948429 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/combobox_readonly_true-manual.html b/testing/web-platform/tests/wai-aria/combobox_readonly_true-manual.html
index 6f2872adfa857..26a4302c24b86 100644
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diff --git a/testing/web-platform/tests/wai-aria/combobox_readonly_unspecified-manual.html b/testing/web-platform/tests/wai-aria/combobox_readonly_unspecified-manual.html
index 86926586cdb9d..4ad87b2c0a91d 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/dialog_modal_false-manual.html b/testing/web-platform/tests/wai-aria/dialog_modal_false-manual.html
index d78f21f5db379..6c906d320f158 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/dialog_modal_true-manual.html b/testing/web-platform/tests/wai-aria/dialog_modal_true-manual.html
index a58a88f243060..02cbfb5fe897a 100644
--- a/testing/web-platform/tests/wai-aria/dialog_modal_true-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/dialog_modal_unspecified-manual.html b/testing/web-platform/tests/wai-aria/dialog_modal_unspecified-manual.html
index 117969b16ee91..edd4605dad839 100644
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diff --git a/testing/web-platform/tests/wai-aria/div_element_without_role_roledescription_valid-manual.html b/testing/web-platform/tests/wai-aria/div_element_without_role_roledescription_valid-manual.html
index 7e9b9fc7515df..68b6cc51c728b 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/errormessage_object_in_invalid_state-manual.html b/testing/web-platform/tests/wai-aria/errormessage_object_in_invalid_state-manual.html
index fee1f8804f730..9996568262815 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/errormessage_object_in_valid_state-manual.html b/testing/web-platform/tests/wai-aria/errormessage_object_in_valid_state-manual.html
index 5845479e55691..7c194c6d0ace9 100644
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@@ -3,7 +3,6 @@
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index ddb684f4767b3..91fc6778dbfec 100644
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diff --git a/testing/web-platform/tests/wai-aria/grid_aria-readonly_false_automatically_propagated-manual.html b/testing/web-platform/tests/wai-aria/grid_aria-readonly_false_automatically_propagated-manual.html
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/grid_aria-readonly_true_automatically_propagated-manual.html b/testing/web-platform/tests/wai-aria/grid_aria-readonly_true_automatically_propagated-manual.html
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diff --git a/testing/web-platform/tests/wai-aria/grid_busy_false-manual.html b/testing/web-platform/tests/wai-aria/grid_busy_false-manual.html
index 68376ef95ed89..48edba5bf765a 100644
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diff --git a/testing/web-platform/tests/wai-aria/grid_busy_true-manual.html b/testing/web-platform/tests/wai-aria/grid_busy_true-manual.html
index 873f573090545..ddcdf0198f897 100644
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index ad65db939e710..4891198882acf 100644
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index 624c1d21a79c7..0f03b12605df2 100644
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@@ -3,7 +3,6 @@
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diff --git a/testing/web-platform/tests/wai-aria/table_rowcount_3-manual.html b/testing/web-platform/tests/wai-aria/table_rowcount_3-manual.html
index 81a3a3c16b18d..5bfad69b240d6 100644
--- a/testing/web-platform/tests/wai-aria/table_rowcount_3-manual.html
+++ b/testing/web-platform/tests/wai-aria/table_rowcount_3-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>table rowcount 3</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tablist_orientation_horizontal-manual.html b/testing/web-platform/tests/wai-aria/tablist_orientation_horizontal-manual.html
index 2d7062aade04e..104668cbb95e0 100644
--- a/testing/web-platform/tests/wai-aria/tablist_orientation_horizontal-manual.html
+++ b/testing/web-platform/tests/wai-aria/tablist_orientation_horizontal-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tablist orientation horizontal</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tablist_orientation_unspecified-manual.html b/testing/web-platform/tests/wai-aria/tablist_orientation_unspecified-manual.html
index 497751d7d01d5..001c2ee77b317 100644
--- a/testing/web-platform/tests/wai-aria/tablist_orientation_unspecified-manual.html
+++ b/testing/web-platform/tests/wai-aria/tablist_orientation_unspecified-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tablist orientation unspecified</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tablist_orientation_vertical-manual.html b/testing/web-platform/tests/wai-aria/tablist_orientation_vertical-manual.html
index 18c196b5638b9..f6fe16e8955cd 100644
--- a/testing/web-platform/tests/wai-aria/tablist_orientation_vertical-manual.html
+++ b/testing/web-platform/tests/wai-aria/tablist_orientation_vertical-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tablist orientation vertical</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/term_role-manual.html b/testing/web-platform/tests/wai-aria/term_role-manual.html
index 76941b51ab4d5..ac5030df95033 100644
--- a/testing/web-platform/tests/wai-aria/term_role-manual.html
+++ b/testing/web-platform/tests/wai-aria/term_role-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>term role</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/textbox_placeholder-manual.html b/testing/web-platform/tests/wai-aria/textbox_placeholder-manual.html
index 5c40558325dfc..fdf0635be67ba 100644
--- a/testing/web-platform/tests/wai-aria/textbox_placeholder-manual.html
+++ b/testing/web-platform/tests/wai-aria/textbox_placeholder-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>textbox placeholder</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/toolbar_orientation_horizontal-manual.html b/testing/web-platform/tests/wai-aria/toolbar_orientation_horizontal-manual.html
index 356c9833b0d3b..1b8fda8dd60bb 100644
--- a/testing/web-platform/tests/wai-aria/toolbar_orientation_horizontal-manual.html
+++ b/testing/web-platform/tests/wai-aria/toolbar_orientation_horizontal-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>toolbar orientation horizontal</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/toolbar_orientation_unspecified-manual.html b/testing/web-platform/tests/wai-aria/toolbar_orientation_unspecified-manual.html
index bd2c399bbc954..4607511874bd8 100644
--- a/testing/web-platform/tests/wai-aria/toolbar_orientation_unspecified-manual.html
+++ b/testing/web-platform/tests/wai-aria/toolbar_orientation_unspecified-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>toolbar orientation unspecified</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/toolbar_orientation_vertical-manual.html b/testing/web-platform/tests/wai-aria/toolbar_orientation_vertical-manual.html
index b0d85f9f8c7a6..792952d323d17 100644
--- a/testing/web-platform/tests/wai-aria/toolbar_orientation_vertical-manual.html
+++ b/testing/web-platform/tests/wai-aria/toolbar_orientation_vertical-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>toolbar orientation vertical</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tools/make_tests.pl b/testing/web-platform/tests/wai-aria/tools/make_tests.pl
index b680c0eb202be..01cb5b0b85060 100644
--- a/testing/web-platform/tests/wai-aria/tools/make_tests.pl
+++ b/testing/web-platform/tests/wai-aria/tools/make_tests.pl
@@ -493,7 +493,6 @@ ()
   <head>
     <title>$title</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tree_orientation_horizontal-manual.html b/testing/web-platform/tests/wai-aria/tree_orientation_horizontal-manual.html
index 88ba1e705e4e6..15813f5f039a7 100644
--- a/testing/web-platform/tests/wai-aria/tree_orientation_horizontal-manual.html
+++ b/testing/web-platform/tests/wai-aria/tree_orientation_horizontal-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tree orientation horizontal</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tree_orientation_unspecified-manual.html b/testing/web-platform/tests/wai-aria/tree_orientation_unspecified-manual.html
index b8c2566714467..dfc1bdcc587e1 100644
--- a/testing/web-platform/tests/wai-aria/tree_orientation_unspecified-manual.html
+++ b/testing/web-platform/tests/wai-aria/tree_orientation_unspecified-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tree orientation unspecified</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/tree_orientation_vertical-manual.html b/testing/web-platform/tests/wai-aria/tree_orientation_vertical-manual.html
index b9e88b034df2d..b9afa33ff44cd 100644
--- a/testing/web-platform/tests/wai-aria/tree_orientation_vertical-manual.html
+++ b/testing/web-platform/tests/wai-aria/tree_orientation_vertical-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>tree orientation vertical</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treegrid_colcount_8-manual.html b/testing/web-platform/tests/wai-aria/treegrid_colcount_8-manual.html
index 381f39c2f44f9..a3e9ea14963ca 100644
--- a/testing/web-platform/tests/wai-aria/treegrid_colcount_8-manual.html
+++ b/testing/web-platform/tests/wai-aria/treegrid_colcount_8-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treegrid colcount 8</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treegrid_orientation_horizontal-manual.html b/testing/web-platform/tests/wai-aria/treegrid_orientation_horizontal-manual.html
index 41b49e7a2f5d0..756153abf3bc6 100644
--- a/testing/web-platform/tests/wai-aria/treegrid_orientation_horizontal-manual.html
+++ b/testing/web-platform/tests/wai-aria/treegrid_orientation_horizontal-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treegrid orientation horizontal</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treegrid_orientation_unspecified-manual.html b/testing/web-platform/tests/wai-aria/treegrid_orientation_unspecified-manual.html
index 1eabb26aabf75..d536e9afbed7c 100644
--- a/testing/web-platform/tests/wai-aria/treegrid_orientation_unspecified-manual.html
+++ b/testing/web-platform/tests/wai-aria/treegrid_orientation_unspecified-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treegrid orientation unspecified</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treegrid_orientation_vertical-manual.html b/testing/web-platform/tests/wai-aria/treegrid_orientation_vertical-manual.html
index 92c0e2897d61b..62a19d0904669 100644
--- a/testing/web-platform/tests/wai-aria/treegrid_orientation_vertical-manual.html
+++ b/testing/web-platform/tests/wai-aria/treegrid_orientation_vertical-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treegrid orientation vertical</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treegrid_rowcount_3-manual.html b/testing/web-platform/tests/wai-aria/treegrid_rowcount_3-manual.html
index 86942708dcfd3..9d9b8acf44700 100644
--- a/testing/web-platform/tests/wai-aria/treegrid_rowcount_3-manual.html
+++ b/testing/web-platform/tests/wai-aria/treegrid_rowcount_3-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treegrid rowcount 3</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treeitem_selected_false-manual.html b/testing/web-platform/tests/wai-aria/treeitem_selected_false-manual.html
index 0e2c1f95de808..684fda69b6d15 100644
--- a/testing/web-platform/tests/wai-aria/treeitem_selected_false-manual.html
+++ b/testing/web-platform/tests/wai-aria/treeitem_selected_false-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treeitem selected false</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treeitem_selected_true-manual.html b/testing/web-platform/tests/wai-aria/treeitem_selected_true-manual.html
index 21775643e7616..b951c54dec674 100644
--- a/testing/web-platform/tests/wai-aria/treeitem_selected_true-manual.html
+++ b/testing/web-platform/tests/wai-aria/treeitem_selected_true-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treeitem selected true</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treeitem_selected_undefined-manual.html b/testing/web-platform/tests/wai-aria/treeitem_selected_undefined-manual.html
index f9880872214f4..dddfd3826f094 100644
--- a/testing/web-platform/tests/wai-aria/treeitem_selected_undefined-manual.html
+++ b/testing/web-platform/tests/wai-aria/treeitem_selected_undefined-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treeitem selected undefined</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/wai-aria/treeitem_selected_value_changes-manual.html b/testing/web-platform/tests/wai-aria/treeitem_selected_value_changes-manual.html
index 06b48fc494849..69734c82ddaa1 100644
--- a/testing/web-platform/tests/wai-aria/treeitem_selected_value_changes-manual.html
+++ b/testing/web-platform/tests/wai-aria/treeitem_selected_value_changes-manual.html
@@ -3,7 +3,6 @@
   <head>
     <title>treeitem selected value changes</title>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
-    <link rel="stylesheet" href="/resources/testharness.css">
     <link rel="stylesheet" href="/wai-aria/scripts/manual.css">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
diff --git a/testing/web-platform/tests/web-nfc/nfc_push_ArrayBuffer-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_push_ArrayBuffer-manual.https.html
index 89dbff038abfe..8d12e42d2050f 100644
--- a/testing/web-platform/tests/web-nfc/nfc_push_ArrayBuffer-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_push_ArrayBuffer-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push ArrayBuffer message</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_push_DOMString-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_push_DOMString-manual.https.html
index 9782f67b29bed..a6c3df8b004e3 100644
--- a/testing/web-platform/tests/web-nfc/nfc_push_DOMString-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_push_DOMString-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push DOMString message</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_recordType_empty-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_recordType_empty-manual.https.html
index a213537716bc4..213d6fe5767f7 100644
--- a/testing/web-platform/tests/web-nfc/nfc_recordType_empty-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_recordType_empty-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push and watch empty records</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_recordType_json-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_recordType_json-manual.https.html
index 883bbe731ec81..6a0129efd0c67 100644
--- a/testing/web-platform/tests/web-nfc/nfc_recordType_json-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_recordType_json-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push and watch json records</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_recordType_opaque-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_recordType_opaque-manual.https.html
index 81e9ec12f5210..8035a30ae8149 100644
--- a/testing/web-platform/tests/web-nfc/nfc_recordType_opaque-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_recordType_opaque-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push and watch opaque records</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_recordType_text-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_recordType_text-manual.https.html
index 279bd6634fdc1..9b0ee276c8579 100644
--- a/testing/web-platform/tests/web-nfc/nfc_recordType_text-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_recordType_text-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push and watch text records</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>
 
diff --git a/testing/web-platform/tests/web-nfc/nfc_recordType_url-manual.https.html b/testing/web-platform/tests/web-nfc/nfc_recordType_url-manual.https.html
index 70f982373d386..b2e1cfef0b316 100644
--- a/testing/web-platform/tests/web-nfc/nfc_recordType_url-manual.https.html
+++ b/testing/web-platform/tests/web-nfc/nfc_recordType_url-manual.https.html
@@ -3,11 +3,11 @@
 <title>Web NFC Test: push and watch url records</title>
 <link rel="author" title="Intel" href="http://www.intel.com"/>
 <link rel="help" href="https://w3c.github.io/web-nfc/"/>
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/nfc_help.js"></script>
 <meta name="flags" content="interact">
-<meta name="timeout" content="long">
 
 <p>Tap an NFC tag to the test device with NFC support.</p>