body {
  font-family: Arial, sans-serif;
  padding: 1em;
  background: #f5f5f5;
  color: #333;
}
h1, h2 {
  text-align: center;
}
section {
  margin-bottom: 2em;
}
#galleryList button {
  margin: 5px;
  padding: 10px;
}