<html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <style>
      body {
        margin: 0;
        height: 100%;
        display: flex;
        flex-direction: column;
      }
      iframe {
        height: 100%;
      }
    </style>
  </head>
  <body>
    Some stuff
    <iframe
      src="https://example.org/tests/junit/hello.html"
      id="iframe"
    ></iframe>
  </body>
</html>
