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

header {
  background: #004080;
  color: #fff;
  padding: 20px 0;
  text-align: center;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 10px 0 0;
}

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

main {
  padding: 40px 20px;
  max-width: 900px;
  margin: auto;
}

section {
  margin-bottom: 40px;
}

#hero {
  background: #e0eaff;
  padding: 30px;
  text-align: center;
  border-radius: 8px;
}

footer {
  background: #004080;
  color: #fff;
  text-align: center;
  padding: 15px 0;
}