body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f4f4f4;
  color: #333;
}

header {
  background-color: #005a9c;
  color: white;
  text-align: center;
  padding: 1rem;
}

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

nav li {
  display: inline;
  margin: 0 10px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

main {
  max-width: 900px;
  margin: 20px auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
}

h2 {
  color: #005a9c;
}

footer {
  text-align: center;
  padding: 10px;
  background-color: #ddd;
  margin-top: 20px;
  font-size: 0.9rem;
}