<!DOCTYPE html>
<html>
<head>
<title>404</title>
<style>
body {
background-color: #111;
color: white;
}
</style>
</head>
<body>
<h1>404 - File not found</h1>
<h2>Create a custom 404 page with <code>app.not_found(...)</code></h2>
<p><b>Note:</b> This message will only show in development mode.</p>
</body>
</html>