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

header {
  background: #0a2540;
  color: white;
  padding: 20px;
  text-align: center;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}

.hero {
  padding: 60px;
  text-align: center;
  background: #f4f4f4;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin: 10px;
  background: #0a2540;
  color: white;
  text-decoration: none;
}

.section {
  padding: 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

footer {
  background: #0a2540;
  color: white;
  text-align: center;
  padding: 20px;
}