diff --git a/src/classes/Post.coffee b/src/classes/Post.coffee
index 57e455b92..a7d92f5b7 100644
--- a/src/classes/Post.coffee
+++ b/src/classes/Post.coffee
@@ -260,6 +260,6 @@ class Post
     return
 
   setCatalogOP: (isCatalogOP) ->
-    @nodes.root.classList.toggle 'catalog-postContainer', isCatalogOP
+    @nodes.root.classList.toggle 'catalog-container', isCatalogOP
     @nodes.root.classList.toggle 'opContainer', !isCatalogOP
     @nodes.post.classList.toggle 'catalog-post', isCatalogOP
diff --git a/src/css/burichan.css b/src/css/burichan.css
index 8f869b907..f432dabb7 100644
--- a/src/css/burichan.css
+++ b/src/css/burichan.css
@@ -31,13 +31,13 @@
 }
 
 /* Catalog */
-:root.burichan.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.burichan.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #D6DAF0;
 }
 :root.burichan.werkTyme .catalog-thread:not(:hover),
 :root.burichan.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.burichan.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.burichan.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.burichan.catalog-hover-expand .catalog-container:hover > .post,
+:root.burichan.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #B7C5D9;
 }
 
diff --git a/src/css/futaba.css b/src/css/futaba.css
index 9130dc0c9..09ffa7cba 100644
--- a/src/css/futaba.css
+++ b/src/css/futaba.css
@@ -31,13 +31,13 @@
 }
 
 /* Catalog */
-:root.futaba.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.futaba.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #F0E0D6;
 }
 :root.futaba.werkTyme .catalog-thread:not(:hover),
 :root.futaba.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.futaba.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.futaba.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.futaba.catalog-hover-expand .catalog-container:hover > .post,
+:root.futaba.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #D9BFB7;
 }
 
diff --git a/src/css/photon.css b/src/css/photon.css
index 1ef404587..cddb1146b 100644
--- a/src/css/photon.css
+++ b/src/css/photon.css
@@ -31,13 +31,13 @@
 }
 
 /* Catalog */
-:root.photon.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.photon.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #DDD;
 }
 :root.photon.werkTyme .catalog-thread:not(:hover),
 :root.photon.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.photon.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.photon.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.photon.catalog-hover-expand .catalog-container:hover > .post,
+:root.photon.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #CCC;
 }
 
diff --git a/src/css/style.css b/src/css/style.css
index 1ba32f582..8b53fba18 100644
--- a/src/css/style.css
+++ b/src/css/style.css
@@ -732,18 +732,18 @@ div.catalog-thread {
   width: 270px;
   height: 410px;
 }
-.catalog-postContainer {
+.catalog-container {
   position: absolute;
   top: -4px;
   left: 0;
   right: 0;
   bottom: 0;
 }
-.catalog-postContainer:not(:hover),
-:root:not(.catalog-hover-expand) .catalog-postContainer {
+.catalog-container:not(:hover),
+:root:not(.catalog-hover-expand) .catalog-container {
   overflow: hidden;
 }
-:root.catalog-hover-expand .catalog-postContainer:hover {
+:root.catalog-hover-expand .catalog-container:hover {
   z-index: 1;
 }
 .catalog-post {
@@ -761,11 +761,11 @@ div.catalog-post {
   margin-top: -7px;
   padding-top: 6px;
 }
-:root.catalog-hover-expand .catalog-postContainer:hover > .catalog-post {
+:root.catalog-hover-expand .catalog-container:hover > .catalog-post {
   margin-left: -61px;
   margin-right: -61px;
 }
-:root.catalog-hover-expand .catalog-postContainer:hover > * > :not(.catalog-replies) {
+:root.catalog-hover-expand .catalog-container:hover > * > :not(.catalog-replies) {
   padding-left: 2px;
   padding-right: 2px;
 }
@@ -818,13 +818,13 @@ div.catalog-post {
   margin: 0;
   padding-bottom: .3em;
 }
-.catalog-postContainer:not(:hover) > * > .file,
-.catalog-postContainer:not(:hover) > * > .postInfo > :not(.subject),
-.catalog-postContainer:not(:hover) > * > .catalog-replies,
-:root:not(.catalog-hover-expand) .catalog-postContainer > * > .file,
-:root:not(.catalog-hover-expand) .catalog-postContainer > * > .postInfo > :not(.subject),
-:root:not(.catalog-hover-expand) .catalog-postContainer > * > .catalog-replies,
-.catalog-thread > .catalog-postContainer > :not(.catalog-post),
+.catalog-container:not(:hover) > * > .file,
+.catalog-container:not(:hover) > * > .postInfo > :not(.subject),
+.catalog-container:not(:hover) > * > .catalog-replies,
+:root:not(.catalog-hover-expand) .catalog-container > * > .file,
+:root:not(.catalog-hover-expand) .catalog-container > * > .postInfo > :not(.subject),
+:root:not(.catalog-hover-expand) .catalog-container > * > .catalog-replies,
+.catalog-thread > .catalog-container > :not(.catalog-post),
 .catalog-post > .file > :not(.fileText),
 .catalog-post > * > .fileText > :not(:first-child),
 .catalog-post > .postInfo > :not(.subject):not(.nameBlock):not(.dateTime),
@@ -870,7 +870,7 @@ div.catalog-post > div.postInfo {
 }
 .catalog-post > * > .nameBlock,
 .catalog-post > * > .dateTime,
-:root.catalog-hover-expand .catalog-postContainer:hover > * > .postMessage:not(:empty) {
+:root.catalog-hover-expand .catalog-container:hover > * > .postMessage:not(:empty) {
   padding-top: .3em;
 }
 .catalog-reply {
@@ -1322,13 +1322,13 @@ input[name="Default Volume"] {
 .catalog-thread.filter-highlight .catalog-thumb,
 :root.werkTyme .catalog-thread.filter-highlight:not(:hover),
 :root.werkTyme:not(.catalog-hover-expand) .catalog-thread.filter-highlight,
-:root.werkTyme.catalog-hover-expand .catalog-thread.filter-highlight > .catalog-postContainer:hover > .catalog-post {
+:root.werkTyme.catalog-hover-expand .catalog-thread.filter-highlight > .catalog-container:hover > .catalog-post {
   box-shadow: 0 0 3px 3px rgba(255, 0, 0, .5);
 }
 .catalog-thread.watched .catalog-thumb,
 :root.werkTyme .catalog-thread.watched:not(:hover),
 :root.werkTyme:not(.catalog-hover-expand) .catalog-thread.watched,
-:root.werkTyme.catalog-hover-expand .catalog-thread.watched > .catalog-postContainer:hover > .catalog-post {
+:root.werkTyme.catalog-hover-expand .catalog-thread.watched > .catalog-container:hover > .catalog-post {
   outline: 2px solid rgba(255, 0, 0, .75);
 }
 
diff --git a/src/css/tomorrow.css b/src/css/tomorrow.css
index 338bf826c..f208ca4c2 100644
--- a/src/css/tomorrow.css
+++ b/src/css/tomorrow.css
@@ -30,13 +30,13 @@
 }
 
 /* Catalog */
-:root.tomorrow.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.tomorrow.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #282A2E;
 }
 :root.tomorrow.werkTyme .catalog-thread:not(:hover),
 :root.tomorrow.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.tomorrow.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.tomorrow.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.tomorrow.catalog-hover-expand .catalog-container:hover > .post,
+:root.tomorrow.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #111;
 }
 
@@ -81,13 +81,13 @@
 :root.tomorrow .catalog-thread.filter-highlight .catalog-thumb,
 :root.tomorrow.werkTyme .catalog-thread.filter-highlight:not(:hover),
 :root.tomorrow.werkTyme:not(.catalog-hover-expand) .catalog-thread.filter-highlight,
-:root.tomorrow.werkTyme.catalog-hover-expand .catalog-thread.filter-highlight > .catalog-postContainer:hover > .catalog-post {
+:root.tomorrow.werkTyme.catalog-hover-expand .catalog-thread.filter-highlight > .catalog-container:hover > .catalog-post {
   box-shadow: 0 0 3px 3px rgba(64, 192, 255, .7);
 }
 :root.tomorrow .catalog-thread.watched .catalog-thumb,
 :root.tomorrow.werkTyme .catalog-thread.watched:not(:hover),
 :root.tomorrow.werkTyme:not(.catalog-hover-expand) .catalog-thread.watched,
-:root.tomorrow.werkTyme.catalog-hover-expand .catalog-thread.watched > .catalog-postContainer:hover > .catalog-post {
+:root.tomorrow.werkTyme.catalog-hover-expand .catalog-thread.watched > .catalog-container:hover > .catalog-post {
   outline: 2px solid rgb(64, 192, 255);
 }
 
diff --git a/src/css/yotsuba-b.css b/src/css/yotsuba-b.css
index 39460fadc..1f79971f9 100644
--- a/src/css/yotsuba-b.css
+++ b/src/css/yotsuba-b.css
@@ -31,13 +31,13 @@
 }
 
 /* Catalog */
-:root.yotsuba-b.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.yotsuba-b.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #D6DAF0;
 }
 :root.yotsuba-b.werkTyme .catalog-thread:not(:hover),
 :root.yotsuba-b.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.yotsuba-b.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.yotsuba-b.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.yotsuba-b.catalog-hover-expand .catalog-container:hover > .post,
+:root.yotsuba-b.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #B7C5D9;
 }
 
diff --git a/src/css/yotsuba.css b/src/css/yotsuba.css
index bd32f58d5..645d582c6 100644
--- a/src/css/yotsuba.css
+++ b/src/css/yotsuba.css
@@ -31,13 +31,13 @@
 }
 
 /* Catalog */
-:root.yotsuba.catalog-hover-expand .catalog-postContainer:hover > .post {
+:root.yotsuba.catalog-hover-expand .catalog-container:hover > .post {
   background-color: #F0E0D6;
 }
 :root.yotsuba.werkTyme .catalog-thread:not(:hover),
 :root.yotsuba.werkTyme:not(.catalog-hover-expand) .catalog-thread,
-:root.yotsuba.catalog-hover-expand .catalog-postContainer:hover > .post,
-:root.yotsuba.catalog-hover-expand .catalog-postContainer:hover .catalog-reply {
+:root.yotsuba.catalog-hover-expand .catalog-container:hover > .post,
+:root.yotsuba.catalog-hover-expand .catalog-container:hover .catalog-reply {
   border-color: #D9BFB7;
 }
 
diff --git a/src/main/Main.coffee b/src/main/Main.coffee
index f44059aae..2a2dc5232 100644
--- a/src/main/Main.coffee
+++ b/src/main/Main.coffee
@@ -229,7 +229,7 @@ Main =
         bgColor = window.getComputedStyle(div).backgroundColor
         $.rm div
         Main.bgColorStyle.textContent = """
-          .dialog, .suboption-list > div:last-of-type, :root.catalog-hover-expand .catalog-postContainer:hover > .post {
+          .dialog, .suboption-list > div:last-of-type, :root.catalog-hover-expand .catalog-container:hover > .post {
             background-color: #{bgColor};
           }
         """