.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 15px;
  width: 100%;
  margin: 0 auto;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}