cobalt/demos/content/background-mode-demo/background-mode-demo.html

<!DOCTYPE html>
<html>
<head>
  <title>Loop Playback</title>
  <style>
    body {
      background-color: rgb(255, 255, 255);
      color: #0047ab;
      font-size: 50px;
    }
    video {
      transform: translateX(100px) rotate(3deg);
    }
  </style>
</head>
<body>
  Loop Playback
  <script type="text/javascript" src="background-mode-demo.js"></script>
  <div>Playback Actions:
     <span id='info' style='white-space: pre; background-color:#00FF00'></span>
  </div>
</body>
</html>