body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 1rem;
}

main {
  padding: 2rem;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  margin-bottom: 1rem;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}