body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  color: #222;
}

header {
  background: #111;
  color: #fff;
  padding: 20px;
  text-align: center;
}

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

main {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

section {
  background: #fff;
  padding: 20px;
  margin-bottom: 25px;
  border-radius: 10px;
  box-shadow: 0 0 10px #ccc;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

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

footer {
  text-align: center;
  padding: 20px;
  background: #111;
  color: #fff;
}