How to make a top-of-the-page "alert" that users can close themselves

I use “add pause before next action” and hide it after pause is complete. But the users can’t click a button to close the floating group before the pause action is complete. It seems like all other WFs stop working until that pause is complete.

In this case, users can’t control when a floating group is closed and have it close automatically.

Edit: It’s true. All other user click initiated workflows stop working during the pause.