popup/index.html
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=400,user-scalable=no">
<title>menus</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div id="container" />
<script type="text/javascript" src="bundle.js"></script>
</body>
</html>