body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #222;
}

header {
  background: #0a1f44;
  padding: 15px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  color: white;
  margin: 0;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
}

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

main {
  padding: 40px;
}

footer {
  background: #eee;
  padding: 20px;
  text-align: center;
}