diff --git a/app/assets/stylesheets/desktop/discourse.scss b/app/assets/stylesheets/desktop/discourse.scss
index 03b69ab5b13..9dab1ac1337 100644
--- a/app/assets/stylesheets/desktop/discourse.scss
+++ b/app/assets/stylesheets/desktop/discourse.scss
@@ -554,7 +554,6 @@ body {
   .input-prepend input, .input-append input, .input-prepend select, .input-append select {
     position: relative;
     margin-bottom: 0;
-    *margin-left: 0;
     vertical-align: middle;
     border-radius: 0 3px 3px 0;
   }
@@ -614,7 +613,6 @@ body {
 
   .form-horizontal input, .form-horizontal textarea, .form-horizontal select,  .form-horizontal .input-prepend, .form-horizontal .input-append {
     display: inline-block;
-    *display: inline;
     margin-bottom: 0;
   }
   .form-horizontal .hide {
@@ -627,7 +625,6 @@ body {
   .form-horizontal {
     .control-group {
       margin-bottom: 18px;
-      *zoom: 1;
       &:before {
         display: table;
         content: "";
@@ -650,13 +647,7 @@ body {
       font-weight: bold;
     }
     .controls {
-      *display: inline-block;
-      *padding-left: 20px;
       margin-left: 160px;
-      *margin-left: 0;
-      &:first-child {
-        *padding-left: 160px;
-      }
     }
   }
 
@@ -724,9 +715,6 @@ body {
 
 /* bootstrap colums */
 
-.row {
-  *zoom: 1;
-}
 .row:before,
 .row:after {
   display: table;
diff --git a/app/assets/stylesheets/desktop/modal.scss b/app/assets/stylesheets/desktop/modal.scss
index 44831bd4f6b..285d2a911ec 100644
--- a/app/assets/stylesheets/desktop/modal.scss
+++ b/app/assets/stylesheets/desktop/modal.scss
@@ -7,9 +7,6 @@
   .dropdown-menu {
      z-index: 2050;
   }
-  .dropdown.open {
-    *z-index: 2050;
-  }
   .popover {
     z-index: 2060;
   }
@@ -53,8 +50,6 @@
   background-color: $primary_background_color;
   border: 1px solid $primary_border_color;
   border: 1px solid lighten($primary_border_color, 10%);
-  *border: 1px solid $primary_border_color;
-  /* IE6-7 */
 
   box-shadow: 0 3px 7px rgba($primary_shadow_color, .8);
   background-clip: padding-box;
@@ -79,10 +74,8 @@
   height: auto;
   margin: -250px 0 0 -305px;
   background-color: $primary_background_color;
-border: 1px solid $primary_border_color;
+  border: 1px solid $primary_border_color;
   border: 1px solid lighten($primary_border_color, 10%);
-  *border: 1px solid $primary_border_color;
-  /* IE6-7 */
 
   box-shadow: 0 3px 7px rgba($primary_shadow_color, .8);
   background-clip: padding-box;
@@ -108,7 +101,6 @@ border: 1px solid $primary_border_color;
   margin: 0 15px;
   padding: 14px 0 15px;
   border-top: 1px solid $primary_border_color;
-  *zoom: 1;
 }
 .modal-footer:before,
 .modal-footer:after {
diff --git a/app/assets/stylesheets/desktop/topic-post.scss b/app/assets/stylesheets/desktop/topic-post.scss
index 68e385f03bd..ec2be4b2250 100644
--- a/app/assets/stylesheets/desktop/topic-post.scss
+++ b/app/assets/stylesheets/desktop/topic-post.scss
@@ -849,9 +849,6 @@ button.show-replies {
 .dropdown {
   position: relative;
 }
-.dropdown-toggle {
-  *margin-bottom: -3px;
-}
 .caret {
   display: inline-block;
   width: 0;
@@ -896,9 +893,6 @@ button.show-replies {
   text-decoration: none;
   background-color: $emphasis_text_color;
 }
-.open {
-  *z-index: 1000;
-}
 .open > .dropdown-menu {
   display: block;
 clear: both;
diff --git a/app/assets/stylesheets/mobile/modal.scss b/app/assets/stylesheets/mobile/modal.scss
index 53fb4fae11d..d6e81348188 100644
--- a/app/assets/stylesheets/mobile/modal.scss
+++ b/app/assets/stylesheets/mobile/modal.scss
@@ -7,9 +7,6 @@
   .dropdown-menu {
      z-index: 2050;
   }
-  .dropdown.open {
-    *z-index: 2050;
-  }
   .popover {
     z-index: 2060;
   }
@@ -48,7 +45,7 @@
 }
 .modal-middle-container {
   margin-top: 10%;
-    max-width: 100%;
+  max-width: 100%;
 
 }
 .modal-inner-container {
@@ -57,8 +54,6 @@
   background-color: $primary_background_color;
   border: 1px solid $primary_border_color;
   border: 1px solid rgba(0, 0, 0, 0.3);
-  *border: 1px solid $primary_border_color;
-  /* IE6-7 */
 
   @include border-radius-all (6px);
   box-shadow: 0 3px 7px rgba(0, 0, 0, 0.3);
@@ -87,8 +82,6 @@
   background-color: $primary_background_color;
   border: 1px solid $primary_border_color;
   border: 1px solid rgba(0, 0, 0, 0.3);
-  *border: 1px solid $primary_border_color;
-  /* IE6-7 */
 
   @include border-radius-all (6px);
   box-shadow: 0 3px 7px rgba($primary_shadow_color, 0.3);
@@ -117,7 +110,6 @@
   border-top: 1px solid #ddd;
   @include border-radius-all(0 0 6px 6px);
   @include box-shadow (inset 0 1px 0 rgba($primary_shadow_color, .8));
-  *zoom: 1;
 }
 .modal-footer:before,
 .modal-footer:after {
diff --git a/app/assets/stylesheets/mobile/topic-list.scss b/app/assets/stylesheets/mobile/topic-list.scss
index 9562206b283..0cc735724e7 100644
--- a/app/assets/stylesheets/mobile/topic-list.scss
+++ b/app/assets/stylesheets/mobile/topic-list.scss
@@ -358,9 +358,6 @@ span.posted {
 .dropdown {
   position: relative;
 }
-.dropdown-toggle {
-  *margin-bottom: -3px;
-}
 .dropdown-toggle:active,
 .open .dropdown-toggle {
   outline: 0;
@@ -390,8 +387,6 @@ span.posted {
   background-color: $primary_background_color;
   border: 1px solid $primary_border_color;
   border: 1px solid rgba(0, 0, 0, 0.2);
-  *border-right-width: 2px;
-  *border-bottom-width: 2px;
   border-radius: 5px;
   box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
   background-clip: padding-box;
@@ -414,12 +409,9 @@ span.posted {
   text-decoration: none;
   background-color: $emphasis_text_color;
 }
-.open {
-  *z-index: 1000;
-}
 .open > .dropdown-menu {
   display: block;
-clear: both;
+  clear: both;
 }
 .fade {
   opacity: 0;
diff --git a/app/assets/stylesheets/vendor/bootstrap.scss b/app/assets/stylesheets/vendor/bootstrap.scss
index 02eb1bb4bb0..925c58edfa3 100644
--- a/app/assets/stylesheets/vendor/bootstrap.scss
+++ b/app/assets/stylesheets/vendor/bootstrap.scss
@@ -24,7 +24,6 @@ img {
 }
 .row {
   margin-left: -12px;
-  *zoom: 1;
 }
 .row:before,
 .row:after {
@@ -118,9 +117,6 @@ input[type="submit"].btn::-moz-focus-inner {
 .dropdown {
   position: relative;
 }
-.dropdown-toggle {
-  *margin-bottom: -3px;
-}
 .dropdown-toggle:active,
 .open .dropdown-toggle {
   outline: 0;
@@ -149,8 +145,6 @@ input[type="submit"].btn::-moz-focus-inner {
   background-color: #ffffff;
   border: 1px solid #ccc;
   border: 1px solid rgba(0, 0, 0, 0.2);
-  *border-right-width: 2px;
-  *border-bottom-width: 2px;
   border-radius: 5px;
   box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
   background-clip: padding-box;
@@ -171,9 +165,6 @@ input[type="submit"].btn::-moz-focus-inner {
   text-decoration: none;
   background-color: #0088cc;
 }
-.open {
-  *z-index: 1000;
-}
 .open > .dropdown-menu {
   display: block;
 }
@@ -475,7 +466,6 @@ body {
   .input-prepend input, .input-append input, .input-prepend select, .input-append select {
     position: relative;
     margin-bottom: 0;
-    *margin-left: 0;
     vertical-align: middle;
     border-radius: 0 3px 3px 0;
   }
@@ -536,7 +526,6 @@ body {
 
   .form-horizontal input, .form-horizontal textarea, .form-horizontal select,  .form-horizontal .input-prepend, .form-horizontal .input-append {
     display: inline-block;
-    *display: inline;
     margin-bottom: 0;
   }
   .form-horizontal .hide {
@@ -549,7 +538,6 @@ body {
   .form-horizontal {
     .control-group {
       margin-bottom: 18px;
-      *zoom: 1;
       &:before {
         display: table;
         content: "";
@@ -572,13 +560,7 @@ body {
       font-weight: bold;
     }
     .controls {
-      *display: inline-block;
-      *padding-left: 20px;
       margin-left: 160px;
-      *margin-left: 0;
-      &:first-child {
-        *padding-left: 160px;
-      }
     }
   }
 
diff --git a/app/assets/stylesheets/vendor/chosen.css.erb b/app/assets/stylesheets/vendor/chosen.css.erb
index d66e8b44d57..f1102416a15 100644
--- a/app/assets/stylesheets/vendor/chosen.css.erb
+++ b/app/assets/stylesheets/vendor/chosen.css.erb
@@ -8,7 +8,6 @@
   position: relative;
   display: inline-block;
   zoom: 1;
-  *display: inline;
 }
 .chzn-container .chzn-drop {
   background: #fff;