remove-document-element-of-iframe-having-style-content.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>Testcase for bug 643706 of Mozilla</title>

<script>

function boom() {

  const iframe = document.querySelector("iframe");

  const win = iframe.contentWindow;

  win.document.designMode = 'on';

  iframe.style.content = "'m'";

  win.document.removeChild(win.document.documentElement)

</script>

</head>

<body onload="boom();"><iframe srcdoc=""></iframe></body>

</html>