body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #1a1a1a;
  color: white;
  text-align: center;
}

header {
  background: #333;
  padding: 20px;
}

header h1 {
  margin: 0;
  color: #f1c40f;
}

nav a {
  color: #fff;
  margin: 0 15px;
  text-decoration: none;
}

section {
  padding: 40px 20px;
}

h2 {
  color: #f39c12;
}

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

li {
  margin: 10px 0;
}

footer {
  background: #222;
  padding: 20px;
  margin-top: 40px;
}