JSFiddle - React, Tailwind, and code Playground

HTML

<html>
      <head>
        <script type="text/javascript">
            window.setTimeout(function(){
                var ifr=document.createElement("iframe");
                ifr.src="about:blank";
                document.body.appendChild(ifr);
                window.setTimeout(function(){
                    var doc=ifr.contentWindow.document || ifr.contentDocument;
                    var div=doc.createElement("div");
                    div.innerHTML="test";
                    doc.body.appendChild(div);
                },500);
            },500);
        </script>
    </head>
  </html>