.story-gallery img {
  display: block;
  height: 360px;
  object-fit: cover;
  width: 100%;
}

.story-gallery img:first-child {
  grid-row: span 2;
  height: 721px;
}

@media (max-width: 900px) {
  .story-gallery img:first-child {
    grid-row: auto;
    height: 480px;
  }
}