@media screen and (min-width: 990px) {
  .gallery-wrapper {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr;
    gap: 1rem;
  }

  .gallery-wrapper > li:first-child {
    grid-row: span 2;
  }

  .gallery-wrapper > li:first-child .media {
    padding: 0;
    height: 100%;
  }
}