diff --git a/src/css/burichan.css b/src/css/burichan.css
index 2b55ebe36..25dd010ce 100644
--- a/src/css/burichan.css
+++ b/src/css/burichan.css
@@ -30,12 +30,6 @@
   background-color: #D6DAF0;
 }
 
-/* Catalog */
-:root.burichan .catalog-thread:hover, :root.burichan .catalog-thread:hover > .comment {
-  background-color: #D6DAF0;
-  border-color: #B7C5D9;
-}
-
 /* Quote */
 :root.burichan .backlink.deadlink {
   color: #34345C !important;
diff --git a/src/css/futaba.css b/src/css/futaba.css
index 83cdc935a..a36b5c0fe 100644
--- a/src/css/futaba.css
+++ b/src/css/futaba.css
@@ -30,12 +30,6 @@
   background-color: #F0E0D6;
 }
 
-/* Catalog */
-:root.futaba .catalog-thread:hover, :root.futaba .catalog-thread:hover > .comment {
-  background-color: #F0E0D6;
-  border-color: #D9BFB7;
-}
-
 /* Quote */
 :root.futaba .backlink.deadlink {
   color: #00E !important;
diff --git a/src/css/photon.css b/src/css/photon.css
index 927caaa64..4b0e09d09 100644
--- a/src/css/photon.css
+++ b/src/css/photon.css
@@ -31,10 +31,6 @@
 }
 
 /* Catalog */
-:root.photon .catalog-thread:hover, :root.photon .catalog-thread:hover > .comment {
-  background-color: #DDD;
-  border-color: #CCC;
-}
 :root.photon .catalog-code {
   background-color: rgba(150, 150, 150, 0.2);
 }
diff --git a/src/css/style.css b/src/css/style.css
index 0c969cdcb..bcd3b3d60 100644
--- a/src/css/style.css
+++ b/src/css/style.css
@@ -796,21 +796,6 @@ div[data-checked="false"] > .suboption-list {
   text-align: center;
   margin: 0;
 }
-[name="delform"], .board, .catalog-thread, .catalog-thread:hover > .comment {
-  background-color: inherit;
-}
-.catalog-thread:hover {
-  margin: -1px 1px 4px;
-  border: 1px solid transparent;
-  z-index: 1;
-}
-.catalog-thread:hover > .comment {
-  margin: 0 -1px -1px;
-  border: 1px solid transparent;
-  border-top: none;
-  -webkit-flex-shrink: 0;
-  flex-shrink: 0;
-}
 /* /tg/ dice rolls */
 .board_tg .catalog-thread > .comment > b {
   font-weight: normal;
diff --git a/src/css/tomorrow.css b/src/css/tomorrow.css
index d4c14fcce..769fbe340 100644
--- a/src/css/tomorrow.css
+++ b/src/css/tomorrow.css
@@ -30,10 +30,6 @@
 }
 
 /* Catalog */
-:root.tomorrow .catalog-thread:hover, :root.tomorrow .catalog-thread:hover > .comment {
-  background-color: #282A2E;
-  border-color: #111;
-}
 :root.tomorrow .catalog-code {
   background-color: rgba(255, 255, 255, 0.1);
 }
diff --git a/src/css/yotsuba-b.css b/src/css/yotsuba-b.css
index 8dfa73846..18a37cc7a 100644
--- a/src/css/yotsuba-b.css
+++ b/src/css/yotsuba-b.css
@@ -30,12 +30,6 @@
   background-color: #D6DAF0;
 }
 
-/* Catalog */
-:root.yotsuba-b .catalog-thread:hover, :root.yotsuba-b .catalog-thread:hover > .comment {
-  background-color: #D6DAF0;
-  border-color: #B7C5D9;
-}
-
 /* Quote */
 :root.yotsuba-b .backlink.deadlink {
   color: #34345C !important;
diff --git a/src/css/yotsuba.css b/src/css/yotsuba.css
index e8dbe7679..feb9bf51d 100644
--- a/src/css/yotsuba.css
+++ b/src/css/yotsuba.css
@@ -30,12 +30,6 @@
   background-color: #F0E0D6;
 }
 
-/* Catalog */
-:root.yotsuba .catalog-thread:hover, :root.yotsuba .catalog-thread:hover > .comment {
-  background-color: #F0E0D6;
-  border-color: #D9BFB7;
-}
-
 /* Quote */
 :root.yotsuba .backlink.deadlink {
   color: #00E !important;