body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f0f8ff;
  color: #333;
}

header {
  background: #00695c;
  color: white;
  padding: 2rem;
  text-align: center;
}

.container {
  display: flex;
}

.sidebar {
  width: 20%;
  background: #004d40;
  padding: 1rem;
}

.sidebar ul {
  list-style-type: none;
  padding: 0;
}

.sidebar a {
  color: white;
  text-decoration: none;
  display: block;
  padding: 0.5rem 0;
}

main {
  width: 80%;
  padding: 2rem;
}

.gallery {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.gallery figure {
  width: 32%;
  margin: 0;
}

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

footer {
  background: #004d40;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}