<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>{% block title %}App{% endblock %}</title>
<link rel="stylesheet" href="{{ url_for('static', filename='css/site.css') }}">
<!-- Keep your existing Bootstrap link here if you use it -->
</head>
<body>
<main class="container">
{% block content %}{% endblock %}
</main>
</body>
</html>