Fix dropdown arrow position

app/javascript/flavours/glitch/styles/components/index.scss

@@ -415,14 +415,14 @@
 
   &.top {
     bottom: -5px;
-    margin-left: -13px;
+    margin-left: -7px;
     border-width: 5px 7px 0;
     border-top-color: $ui-secondary-color;
   }
 
   &.bottom {
     top: -5px;
-    margin-left: -13px;
+    margin-left: -7px;
     border-width: 0 7px 5px;
     border-bottom-color: $ui-secondary-color;
   }