The new AHA popover is fully responsive with modern looks and feel with accessibility features. The layout is using Bootstrap 4.5 with flex box.
<div> <button type="button" class="btn btn-primary" data-toggle="popover" data-placement="top" data-html="true" data-trigger="hover" data-content='<div class="text-center aui-delete-popover"> <p>Are you sure you want to delete this file?</p> </div>'> Click to toggle popover </button> </div>