diff --git a/source b/source
index 0d1b2c0447c..af28d21866f 100644
--- a/source
+++ b/source
@@ -114889,16 +114889,16 @@ details[open] > summary {
 
   <p>The <code>details</code> element is expected to render as a <span>block box</span>. The element
   is also expected to have an internal <span>shadow tree</span> with two <span
-  data-x="concept-slot">slots</span>, both rendered as a <span>block box</span>. The first <span
-  data-x="concept-slot">slot</span> is expected to take the <code>details</code> element's first
-  <code>summary</code> element child, if any. The second <span data-x="concept-slot">slot</span> is
-  expected to take the <code>details</code> element's remaining descendants, if any.</p>
+  data-x="concept-slot">slots</span>. The first <span data-x="concept-slot">slot</span> is expected
+  to take the <code>details</code> element's first <code>summary</code> element child, if any. The
+  second <span data-x="concept-slot">slot</span> is expected to take the <code>details</code>
+  element's remaining descendants, if any.</p>
 
-  <p>The first <span data-x="concept-slot">slot</span> is expected to allow the user to request the
-  details be shown or hidden.</p>
+  <p>The <code>details</code> element's first <code>summary</code> element child, if any, is
+  expected to allow the user to request the details be shown or hidden.</p>
 
-  <p>The second <span data-x="concept-slot">slot</span> is expected to be removed from the rendering
-  when the <code>details</code> element does not have an <code
+  <p>The <code>details</code> element's second <span data-x="concept-slot">slot</span> is expected
+  to be removed from the rendering when the <code>details</code> element does not have an <code
   data-x="attr-details-open">open</code> attribute.</p>
 
   <!-- https://mail.gnome.org/archives/usability/2006-June/msg00015.html -->