page_with_iframe.html

Enable keyboard shortcuts

<!-- This Source Code Form is subject to the terms of the Mozilla Public

   - License, v. 2.0. If a copy of the MPL was not distributed with this file,

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<html>

  <head>

    <title>This page has an iFrame</title>

  </head>

  <body>

    <iframe id="hidden-iframe" style="visibility: hidden;" src="https://example.com/another/site"></iframe>

  </body>

</html>