harness/webview.html (14 lines of code) (raw):
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<link rel="stylesheet" type="text/css" href="main.css" />
</style>
</head>
<body class="interactive interactive-atom app android">
<%= html %>
<script>
<%= js %>
</script>
</body>
</html>