app.html (15 lines of code) (raw):
<!DOCTYPE html>
<html {{ HTML_ATTRS }}>
<head {{ HEAD_ATTRS }}>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width,initial-scale=1">
{{ HEAD }}
</head>
<body {{ BODY_ATTRS }}>
{{ APP }}
<script type="text/javascript">
document.getElementById('nav-doc').className = 'active'
</script>
</body>
</html>