body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #333;
}

header {
  background: #333;
  color: white;
  padding: 2rem;
  text-align: center;
}

header h1 {
  margin: 0;
}

header nav {
  margin-top: 1rem;
}

header nav a {
  color: #ddd;
  text-decoration: none;
  margin: 0 1rem;
}

header nav a:hover {
  text-decoration: underline;
}

main {
  padding: 2rem;
  max-width: 800px;
  margin: auto;
  background: white;
}

footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}