.gallery {
  display: grid;
  /* Creates as many columns as will fit, with a minimum width of 250px */
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  padding: 15px;
}

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

.caption {
  text-align: center;
  padding: 10px;
  font-size: 14px;
}