#lightgallery {
  display: grid;
  grid-gap: 1rem;
  grid-template-columns: repeat(4, 1fr);
  max-width: 100%;
  width: 100%;
}
#lightgallery a {
  background-color: grey;
  display: block;
  position: relative;
}
#lightgallery a:nth-child(n+8):not(:last-child) {
  display: none;
}
#lightgallery a::before {
  content: "";
  display: block;
  padding-top: 100%;
}
#lightgallery a img {
  height: 100%;
  left: 0;
  object-fit: cover;
  position: absolute;
  top: 0;
  width: 100%;
}