chromium/chrome/test/data/main_content_extraction/sidebar_and_main_content.html

<!DOCTYPE html>
<!-- This test just ensures main content extraction infra works and is not aimed
  to verify the quality of the results. It should be clear enough, so that the
  output won't change often due to model changes. -->

<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>Side bar and main content &mdash; Left Menu</title>
  <style type="text/css">
    body {
      margin: 0;
      padding: 0;
      overflow: hidden;
      height: 100%;
      max-height: 100%;
    }

    #sidebar {
      position: absolute;
      top: 0;
      bottom: 0;
      left: 0;
      width: 230px;
      height: 100%;
      overflow: hidden;
      background: #eee;
    }

    main {
      position: fixed;
      top: 0;
      left: 230px;
      right: 0;
      bottom: 0;
      overflow: auto;
      background: #fff;
    }
  </style>
</head>

<body>
  <main>
    <div>
      <h1>Calvin and Hobbs quote of the day</h1>
      <p>Sometimes I think the surest sign that intelligent life exists
        elsewhere in the universe is that none of it has tried
        to contact us.</p>
      <p>Bill Watterson, Nov 08, 1989</p>
    </div>
  </main>
  <sidebar id="sidebar">
    <h1>Nothing</h1>
    <div>
      <p>Look away</p>
    </div>
  </sidebar>
</body>

</html>