<!DOCTYPE html>
<html>
<head>
<link rel="manifest" href="basic.json">
<meta id="themeColor" name="theme-color" content="yellow" />
<link rel="icon" href="basic-48.png">
</head>
<body>
<h1>Basic web app</h1>
<script>
navigator.serviceWorker.register('/web_apps/service_worker.js');
</script>
</body>
</html>