body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #333;
}
header {
  background: #FFD700;
  padding: 20px;
  text-align: center;
}
header h1 {
  margin: 0;
}
nav {
  background: #000;
  text-align: center;
}
nav a {
  color: #FFD700;
  text-decoration: none;
  padding: 12px 15px;
  display: inline-block;
}
nav a:hover {
  background: #FFD700;
  color: #000;
}
section {
  padding: 20px;
  max-width: 900px;
  margin: auto;
  background: #fff;
  margin-top: 20px;
  border-radius: 8px;
}
footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 15px;
  margin-top: 20px;
}