<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Not found</title>
  <style>
    body { font-family: system-ui, sans-serif; max-width: 500px; margin: 5rem auto; padding: 0 1rem; text-align: center; }
    h1 { font-size: 5rem; margin: 0; color: #bbb; letter-spacing: -0.03em; }
    p { color: #555; }
    a { color: #4488cc; }
  </style>
</head>
<body>
  <h1>404</h1>
  <p>That page doesn't exist.</p>
  <p><a href="/">Back to todos</a></p>
</body>
</html>
