body {
  font-family: 'Poppins', sans-serif;
  margin: 0; padding: 0;
}

header {
  background: #003366;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
}

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

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

.hero {
  background: url('banner.jpg') no-repeat center/cover;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
}

.cards {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px;
}

.card {
  background: #f4f4f4;
  padding: 20px;
  border-radius: 10px;
  flex: 1;
}