Tweak mobile drawer appearance

less/forum/NotificationsDropdown.less

@@ -42,6 +42,11 @@
   border: 1px solid @header-bg;
   min-width: 18px;
   height: 18px;
+  text-align: center;
+
+  @media @phone {
+    left: 20px;
+  }
 
   .new & {
     background: @header-color;