.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 10rem), 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.photo-gallery a {
  display: block;
  overflow: hidden;
  border-radius: 0.25rem;
}

.photo-gallery a:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 3px;
}

.photo-gallery img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}