message: frontend: Add box shadow when there are multiple global notifiers
  Box shadow shows up between notifiers.
  Fixes
diff: @@ -10,10 +10,10 @@ $global-notification-text: #fff;
  cursor: pointer;
  text-decoration: underline;
  }
  -}
  -.co-global-notification + .co-global-notification {
  - border-top: 1px solid #00659c;
  + + .co-global-notification {
  + box-shadow: inset 0 10px 10px -10px rgba(0,34,53,0.7);
  + }
  }
  .co-global-notification__text {
  