file_index.j2

 <!DOCTYPE html>
 <html lang="en">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>File List</title>
    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
 </head>
 <body class="bg-gray-100">
    <div class="container mx-auto p-4">
    <h1 class="text-2xl font-bold mb-4">File List</h1>
    <ul class="list-disc pl-5">
    {% for file in files %}
    <li class="text-gray-700"><a href="./{{ file }}">{{ file }}</a></li>
    {% endfor %}
    </ul>
    </div>
 </body>
 </html>