</head>
<body>
<video id="video" autoplay></video>
- <p><button id="start">Start</button><button id="cancel">Cancel</button></p>
+ <p>
+ <button id="start">Start</button>
+ <button id="cancel">Cancel</button>
+ <button id="startFromBackgroundPage">Start from background page</button>
+ </p>
<script src="app.js"></script>
</body>
</html>