body {
  font-family: Arial;
  margin: 0;
  background: #f5f7fa;
}

.header {
  background: #0d1b2a;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
}

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

.hero {
  padding: 60px;
  text-align: center;
  background: #1b263b;
  color: white;
}

.container {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 20px;
}

.card {
  background: white;
  border-radius: 10px;
  padding: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.card img {
  width: 100%;
  border-radius: 10px;
}

.btn {
  display: inline-block;
  background: #e63946;
  color: white;
  padding: 10px;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 10px;
}

.footer {
  text-align: center;
  padding: 20px;
}