body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f0f8ff;
  color: #333;
}

header {
  background: #0a4ea1;
  color: white;
  text-align: center;
  padding: 20px 0;
}

nav a {
  margin: 0 15px;
  color: white;
  text-decoration: none;
  font-weight: bold;
}

section {
  padding: 20px;
}

footer {
  background: #0a4ea1;
  color: white;
  text-align: center;
  padding: 10px;
}