lovelymono

<!-- You can use JSBin: https://jsbin.com/xoketogeda/edit?html,output to play around with it. -->

<!-- The dialog element is specified in HTML specification, §4.11.4 "The dialog
  element": https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element. -->

<button onclick="document.querySelector('dialog').showModal()">Open dialog</button>

<dialog style="width: 50%;">
  <h1>Native <code>&lt;dialog&gt;</code></h1>