css: fix stylelint issues.

app/javascript/src/styles/specific/admin_dashboards.scss

@@ -2,4 +2,4 @@
   .section {
     margin-bottom: 2em;
   }
-}
+}

app/javascript/src/styles/specific/comments.scss

@@ -29,7 +29,7 @@ div.comments-for-post {
         opacity: 0.3;
 
         &:hover {
-          opacity: 1.0;
+          opacity: 1;
         }
       }
     }
@@ -53,7 +53,7 @@ div#c-comments {
         div.preview {
           position: relative;
 
-          &:before {
+          &::before {
             @include animated-icon;
           }
         }
@@ -63,7 +63,7 @@ div#c-comments {
         div.preview {
           position: relative;
 
-          &:before {
+          &::before {
             @include sound-icon;
           }
         }

app/javascript/src/styles/specific/favorite_groups.scss

@@ -2,4 +2,4 @@
   textarea {
     height: 10em;
   }
-}
+}

app/javascript/src/styles/specific/forum.scss

@@ -45,7 +45,7 @@ div#c-forum-topics {
     color: var(--forum-level-restricted-topic-color);
     font-weight: bold;
   }
-  
+
   tr.forum-topic-row td:last-child {
     white-space: nowrap;
   }

app/javascript/src/styles/specific/meta_searches.scss

@@ -2,4 +2,4 @@
   section {
     margin-bottom: 2em;
   }
-}
+}

app/javascript/src/styles/specific/post_tooltips.scss

@@ -9,14 +9,14 @@ $tooltip-width: 164px * 3 - 10; // 3 thumbnails wide.
   }
 
   &::-webkit-scrollbar-button {
-    width: 0px;
-    height: 0px;
+    width: 0;
+    height: 0;
   }
 
   &::-webkit-scrollbar-thumb {
     background: var(--post-tooltip-scrollbar-background);
     border: none;
-    border-radius: 0px;
+    border-radius: 0;
   }
 
   &::-webkit-scrollbar-thumb:hover {
@@ -30,7 +30,7 @@ $tooltip-width: 164px * 3 - 10; // 3 thumbnails wide.
   &::-webkit-scrollbar-track {
     background: var(--post-tooltip-scrollbar-track-background);
     border: none;
-    border-radius: 0px;
+    border-radius: 0;
   }
 
   &::-webkit-scrollbar-track:hover {
@@ -46,7 +46,6 @@ $tooltip-width: 164px * 3 - 10; // 3 thumbnails wide.
   }
 }
 
-
 .post-tooltip {
   max-width: $tooltip-width;
   min-width: $tooltip-width;

app/javascript/src/styles/specific/posts.scss

@@ -4,9 +4,11 @@
   0% {
     transform:scale(1);
   }
+
   50% {
     transform:scale(1.3);
   }
+
   100% {
     transform:scale(1);
   }
@@ -41,19 +43,19 @@ article.post-preview {
   }
 
   .desc {
-   font-size: 80%;
-   margin-bottom: 0;
+    font-size: 80%;
+    margin-bottom: 0;
   }
 
   img {
     margin: auto;
   }
 
-  &[data-tags~=animated]:before, &[data-file-ext=swf]:before, &[data-file-ext=webm]:before, &[data-file-ext=mp4]:before, &[data-file-ext=zip]:before {
+  &[data-tags~=animated]::before, &[data-file-ext=swf]::before, &[data-file-ext=webm]::before, &[data-file-ext=mp4]::before, &[data-file-ext=zip]::before {
     @include animated-icon;
   }
 
-  &[data-has-sound=true]:before {
+  &[data-has-sound=true]::before {
     @include sound-icon;
   }
 }
@@ -89,12 +91,11 @@ table article.post-preview {
   &.post-status-has-parent img {
     border-color: var(--preview-has-parent-color);
   }
-  
+
   &.post-status-has-children.post-status-has-parent img {
     border-color: var(--preview-has-children-color) var(--preview-has-parent-color) var(--preview-has-parent-color) var(--preview-has-children-color);
   }
 
-
   &.post-status-deleted img {
     border-color: var(--preview-deleted-color);
   }
@@ -111,7 +112,6 @@ table article.post-preview {
     border-color: var(--preview-has-children-color) var(--preview-deleted-color) var(--preview-deleted-color) var(--preview-has-parent-color);
   }
 
-
   /* Pending and flagged posts have blue borders (except in the modqueue). */
   &.post-status-pending:not(.mod-queue-preview) img,
   &.post-status-flagged:not(.mod-queue-preview) img {
@@ -160,7 +160,7 @@ body[data-user-can-approve-posts="true"] .post-preview {
 #has-parent-relationship-preview, #has-children-relationship-preview {
   overflow-x: auto;
   white-space: nowrap;
-  
+
   article.post-preview {
     width: auto;
     border: none;
@@ -280,13 +280,13 @@ div#c-posts {
     display: flex;
 
     input {
-      min-width: 0px;
+      min-width: 0;
     }
 
     #search-box-submit {
       padding: 2px 6px;
       border-left: none;
-      border-radius: 0px;
+      border-radius: 0;
     }
   }
 
@@ -421,7 +421,7 @@ div#c-posts {
 div#c-post-versions, div#c-artist-versions {
   div#a-index {
     a {
-      word-wrap: break-word
+      word-wrap: break-word;
     }
   }
 }

app/javascript/src/styles/specific/user_upgrades.scss

@@ -19,10 +19,7 @@ div#c-user-upgrades {
           width: 10em;
         }
 
-        colgroup#basic {
-        }
-
-        colgroup#gold  {
+        colgroup#gold {
           background-color: var(--user-upgrade-gold-background-color);
         }
 

app/javascript/src/styles/specific/z_responsive.scss

@@ -78,7 +78,7 @@
 
   article.post-preview {
     float: none;
-    margin: 0; 
+    margin: 0;
     text-align: center;
     vertical-align: middle;
     display: inline-block;