Bootstrap class: .dismissible popover

<a tabindex="0" class="btn btn-lg btn-danger" role="button"
   data-toggle="popover" data-trigger="focus" title="Dismissible popover"
   data-content="Click anywhere to dismiss this popover">
   Dismissible popover
</a>

Preview

Dismissible popover

Tips 💡

You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.

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Bootstrap 4 & 5