body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

header {
  background: #1f3c88;
  color: white;
  padding: 15px 0;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

nav {
  text-align: center;
}

nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  background: url('https://images.unsplash.com/photo-1581091870622-7c6f6a55c0e2') no-repeat center/cover;
  height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 36px;
}

section {
  padding: 40px 0;
}

.cards {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.card {
  flex: 1;
  min-width: 250px;
  background: #f4f4f4;
  padding: 20px;
  border-radius: 10px;
}

footer {
  background: #1f3c88;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 20px;
}