JSFiddle - React, Tailwind, and code Playground

HTML

<iframe srcdoc="&lt;!DOCTYPE html&gt;&lt;html lang=&quot;ru&quot;&gt;&lt;head&gt;&lt;meta charset=&quot;utf-8&quot; /&gt;&lt;title&gt;&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;div id=&quot;myNode&quot;&gt;[Node to import]&lt;/div&gt;&lt;/body&gt;&lt;/html&gt;"></iframe>

JavaScript

var iframe = document.getElementsByTagName("iframe")[0];
	var oldNode = iframe.contentWindow.document.getElementById("myNode");
	var newNode = document.importNode(oldNode, true);
	document.body.insertBefore(newNode, document.body.firstChild);