body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #004e92;
  color: #fff;
  padding: 20px;
  text-align: center;
}

header nav a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
}

section {
  padding: 40px;
  max-width: 900px;
  margin: auto;
}

.gallery {
  display: flex;
  gap: 10px;
}

.gallery img {
  width: 100%;
  max-width: 400px;
  border-radius: 8px;
}

footer {
  background: #004e92;
  color: #fff;
  text-align: center;
  padding: 20px;
}

@media (max-width: 768px) {
  .gallery {
    flex-direction: column;
  }
}