diff --git a/extension/css/popup.css b/extension/css/popup.css
index a0b45abb4..e67fa7d6c 100644
--- a/extension/css/popup.css
+++ b/extension/css/popup.css
@@ -78,7 +78,7 @@ table {
 /* stylelint-disable-next-line no-duplicate-selectors */
 #rikaikun-shadow {
   background: var(--primary-background-color);
-  border: 1px solid #d0d0d0 !important;
+  border: 1px solid #d0d0d0;
   border-radius: 5px;
   color: var(--primary-color);
   font: normal 14px sans-serif;
@@ -232,19 +232,6 @@ table {
   font-size: 12px;
 }
 
-.q-w {
-  /* unused */
-  border-right: 1px dotted #b0b0b0 !important;
-  min-width: 300px;
-  padding: 0 2px;
-  vertical-align: top;
-}
-
-.q-k {
-  padding: 0 2px;
-  vertical-align: top;
-}
-
 .small-info {
   font: small-caption;
 }