body {
  font-family: Arial, sans-serif;
  background-color: #e8f0fe;
  margin: 0;
  padding: 0;
  text-align: center;
}

header {
  background-color: #004080;
  color: white;
  padding: 20px;
}

.gallery {
  margin: 20px;
  display: flex;
  justify-content: center;
}

.gallery img {
  width: 400px;
  height: auto;
  border: 3px solid #004080;
  border-radius: 10px;
}