Adjust top positioning in compact mode styles for improved alignment

Author: mr-cheffy

src/browser/base/content/zen-styles/zen-compact-mode.css

@@ -158,7 +158,7 @@
           opacity: 1;
           border-top-width: 1px;
 
-          top: 1px;
+          top: -1px;
         }
       }
     }