client-hints-iframe-inner.sub.https.html

Enable keyboard shortcuts

<!DOCTYPE html>

<title>Client Hint Echoing Iframe</title>

<body>

<script>

window.parent.postMessage({'headers': {

    'sec-ch-viewport-width': '{{header_or_default(sec-ch-viewport-width, )}}',

    'sec-ch-ua-reduced': '{{header_or_default(sec-ch-ua-reduced, )}}',

    'sec-ch-ua-mobile': '{{header_or_default(sec-ch-ua-mobile, )}}',

}}, '*');

</script>

</body>