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

header.banner img {
  width: 100%;
  height: auto;
  display: block;
}

.main-nav {
  background-color: #003366;
  padding: 0.5rem 1rem;
}

.main-nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.main-nav li {
  margin: 0 1rem;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.main-nav a:hover,
.main-nav a.active {
  text-decoration: underline;
}

.container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.section {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.section img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1rem auto;
}

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

.gallery figure {
  flex: 1 1 30%;
  text-align: center;
}

figcaption {
  font-size: 0.9rem;
  color: #666;
}

footer.footer {
  text-align: center;
  margin: 3rem 0 1rem;
}

footer.footer img {
  width: 150px;
}