diff --git a/app/assets/stylesheets/common/admin/admin_base.scss b/app/assets/stylesheets/common/admin/admin_base.scss
index d8ead6c2d04..4788a6db178 100644
--- a/app/assets/stylesheets/common/admin/admin_base.scss
+++ b/app/assets/stylesheets/common/admin/admin_base.scss
@@ -30,9 +30,6 @@
   .admin-contents {
     padding: 8px;
 
-    p {
-    }
-
     .ace-wrapper {
       height: 400px;
     }
@@ -937,9 +934,6 @@ table.api-keys {
     overflow-y: auto;
     overflow-x: hidden;
   }
-  .col.first {
-
-  }
 
   .ember-list-item-view {
     width: 100%;
diff --git a/app/assets/stylesheets/desktop/discourse.scss b/app/assets/stylesheets/desktop/discourse.scss
index be62c64784a..217d233c942 100644
--- a/app/assets/stylesheets/desktop/discourse.scss
+++ b/app/assets/stylesheets/desktop/discourse.scss
@@ -113,8 +113,6 @@ body {
   .boxed {
     height: 100%;
     @include border-radius-all(5px);
-    .contents {
-    }
     &.white {
       background-color: $primary_background_color;
     }
@@ -227,8 +225,6 @@ blockquote {
   padding: 10px 4px 4px 13px;
   background-color: $quote-background;
   border-left: 5px solid $primary_border_color;
-  p {
-  }
 }
 
 .topic-statuses {
@@ -433,8 +429,6 @@ body {
     &[multiple], &[size] {
       height: auto;
     }
-    &:focus {
-    }
   }
 
   .radio, .checkbox {
diff --git a/app/assets/stylesheets/desktop/header.scss b/app/assets/stylesheets/desktop/header.scss
index 3fad5132317..6e1125cd2f8 100644
--- a/app/assets/stylesheets/desktop/header.scss
+++ b/app/assets/stylesheets/desktop/header.scss
@@ -60,10 +60,6 @@
     list-style: none;
     > li {
       float: left;
-      &:first-child .icon {
-      }
-      &:first-child.active .icon {
-      }
       &:last-child .icon {
         border-right: 1px solid $primary_border_color;
       }
@@ -209,8 +205,6 @@
     height: 22px;
     margin: 5px;
     padding: 5px;
-    &:focus {
-    }
   }
   .searching {
     display: block;
diff --git a/app/assets/stylesheets/desktop/topic-post.scss b/app/assets/stylesheets/desktop/topic-post.scss
index 55df6a7dc8c..301eb52007a 100644
--- a/app/assets/stylesheets/desktop/topic-post.scss
+++ b/app/assets/stylesheets/desktop/topic-post.scss
@@ -357,9 +357,6 @@ a.star {
 
       }
 
-      &:active {
-      }
-
       &.collapsed {
         border-bottom: 0;
         padding-bottom: 1px;
@@ -849,19 +846,12 @@ button.show-replies {
 
 }
 
-.btn-group .dropdown-toggle:active,
-.btn-group.open .dropdown-toggle {
-}
-
 .dropdown {
   position: relative;
 }
 .dropdown-toggle {
   *margin-bottom: -3px;
 }
-.dropdown-toggle:active,
-.open .dropdown-toggle {
-}
 .caret {
   display: inline-block;
   width: 0;
@@ -1002,8 +992,6 @@ clear: both;
         }
       }
       .topic-body {
-        .contents {
-        }
         .contents:after {
           display: none;
         }
diff --git a/app/assets/stylesheets/desktop/topic.scss b/app/assets/stylesheets/desktop/topic.scss
index ede8e474723..126b6de9589 100644
--- a/app/assets/stylesheets/desktop/topic.scss
+++ b/app/assets/stylesheets/desktop/topic.scss
@@ -178,8 +178,6 @@ a:hover.reply-new {
 }
 
 #topic-progress-wrapper.docked {
-  #topic-progress {
-  }
   position: absolute;
   bottom: -70px;
 
diff --git a/app/assets/stylesheets/mobile/compose.scss b/app/assets/stylesheets/mobile/compose.scss
index 02061a423dd..3b4e1b228f4 100644
--- a/app/assets/stylesheets/mobile/compose.scss
+++ b/app/assets/stylesheets/mobile/compose.scss
@@ -446,10 +446,6 @@ div.ac-wrap {
   }
 }
 
-.control-row.reply-area {
-
-}
-
 @media screen and (min-width: 1550px) {
   #reply-control {
     .wmd-controls {
diff --git a/app/assets/stylesheets/mobile/discourse.scss b/app/assets/stylesheets/mobile/discourse.scss
index 37531cbdde3..dcca1f3d150 100644
--- a/app/assets/stylesheets/mobile/discourse.scss
+++ b/app/assets/stylesheets/mobile/discourse.scss
@@ -26,8 +26,6 @@ a.no-href {
   cursor: pointer;
 }
 
-header {
-}
 
 body {
 
@@ -177,7 +175,7 @@ body {
     height: 11px;
     overflow: hidden;
     background-color: lighten($secondary_background_color, 76%);
-    display:block {}
+    display: block;
     background: image-url("grippie.png") lighten($secondary_background_color, 76%) no-repeat center 3px;
   }
 }
diff --git a/app/assets/stylesheets/mobile/header.scss b/app/assets/stylesheets/mobile/header.scss
index 13cb507d75c..cbe9eff63f8 100644
--- a/app/assets/stylesheets/mobile/header.scss
+++ b/app/assets/stylesheets/mobile/header.scss
@@ -64,10 +64,6 @@
     list-style: none;
     > li {
       float: left;
-      &:first-child .icon {
-      }
-      &:first-child.active .icon {
-      }
       &:last-child .icon {
         border-right: 1px solid $primary_border_color;
       }
diff --git a/app/assets/stylesheets/mobile/topic-post.scss b/app/assets/stylesheets/mobile/topic-post.scss
index 727eaf51b24..324ca68459f 100644
--- a/app/assets/stylesheets/mobile/topic-post.scss
+++ b/app/assets/stylesheets/mobile/topic-post.scss
@@ -68,10 +68,6 @@ button {
     &:last-of-type {
       border-right: 1px solid $primary_border_color
     }
-       &:hover {
-        }
-        &:active {
-        }
         &.hidden {
           display: none;
         }
@@ -248,8 +244,6 @@ a.star {
         color: $primary_text_color;
         border-bottom: 1px solid $primary_border_color;
 
-      }
-      &.collapsed {
       }
       .fa {
         margin: 0;
diff --git a/app/assets/stylesheets/mobile/topic.scss b/app/assets/stylesheets/mobile/topic.scss
index 151c5f95113..4d1aa545c4f 100644
--- a/app/assets/stylesheets/mobile/topic.scss
+++ b/app/assets/stylesheets/mobile/topic.scss
@@ -130,8 +130,6 @@
 }
 
 #topic-progress-wrapper.docked {
-  #topic-progress {
-  }
   position: absolute;
 }