<button popovertarget="popover" popovertargetaction="show">ポップアップを表示</button>
<button popovertarget="popover" popovertargetaction="hide">ポップアップを非表示</button>
<div popover id="popover">ポップアップの中身</div>

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.