autocomplete.css to less.

themes/bootstrap3/css/autocomplete.css

-.autocomplete-results {
-  background-color: #fff;
-  border: 1px solid #aaa;
-  margin-top: 2px;
-}
-.autocomplete-results .item {
-  display: block;
-  padding-top: .75rem;
-  padding-right: 1rem;
-  padding-bottom: .75rem;
-  padding-left: 1.25rem;
-  border-bottom: 1px solid #aaa;
-  cursor: pointer;
-}
-.autocomplete-results .item:last-child {border: 0;}
-.autocomplete-results .item:hover,
-.autocomplete-results .item.selected {
-  background-color: #000;
-  color: #fff;
-}
\ No newline at end of file

themes/bootstrap3/less/bootstrap.less

@@ -148,13 +148,27 @@ h3 {
 
 /* --- Autocomplete --- */
 .autocomplete-results {
+  margin-top: 2px;
   border: 1px solid @list-group-border;
+  background-color: #fff;
   border-radius: 4px;
+  overflow: hidden;
+
+  .item {
+    display: block;
+    padding-top: .75rem;
+    padding-right: 1rem;
+    padding-bottom: .75rem;
+    padding-left: 1.25rem;
+    border-bottom: 1px solid @list-group-border;
+    cursor: pointer;
 
-  .item {border-bottom-color: @list-group-border;}
-  .item:last-child {border: 0;}
-  .item:hover,
-  .item.selected {background: @brand-primary !important;}
+    &:last-child {border: 0;}
+    &:hover, &.selected {
+      background-color: @brand-primary;
+      color: #fff;
+    }
+  }
 }
 
 

themes/bootstrap3/theme.config.php

@@ -8,7 +8,6 @@ return array(
         'compiled.css',
         'vendor/font-awesome.min.css',
         'vendor/bootstrap-slider.css',
-        'autocomplete.css',
         'print.css:print',
     ),
     'js' => array(