--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -1161,21 +1161,16 @@ toolbar[brighttext] .toolbarbutton-1 > .
       transition-property: border-color, box-shadow;
       transition-duration: .1s;
     }
 
     #urlbar:not(:-moz-lwtheme)[focused],
     .searchbar-textbox:not(:-moz-lwtheme)[focused] {
       box-shadow: 0 0 0 1px Highlight inset;
     }
-
-    /* overlap the urlbar's border and inset box-shadow */
-    #PopupAutoCompleteRichResult:not(:-moz-lwtheme) {
-      margin-top: -2px;
-    }
   }
 
   @media not all and (-moz-os-version: windows-xp) {
     #urlbar:not(:-moz-lwtheme)[focused],
     .searchbar-textbox:not(:-moz-lwtheme)[focused] {
       border-color: Highlight;
     }
   }