<!DOCTYPE html>
<html>
<head>
<title>CSP sandbox test</title>
</head>
<body>
This is a sandboxed document: <pre>Content-Security-Policy: sandbox allow-popups allow-pointer-lock allow-scripts</pre><br>
<iframe id="frame" sandbox="allow-scripts allow-popups allow-orientation-lock" src='sandboxed_child_frame.html'>
</iframe>
</body>
</html>