.gallery {
  display: grid;
  grid-gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  grid-auto-rows: 200px;
  grid-auto-flow: dense;
  max-width: 1200px;
  margin: 10px auto;
  padding: 0 10px;
}

.gallery__item {
  align-items: center;
  display: flex;
  justify-content: center;
}

.gallery__item > img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.gallery__item--hor {
  grid-column: span 2;
}

.gallery__item--vert {
  grid-row: span 2;
}

.gallery__item--lg {
  grid-column: span 2;
  grid-row: span 2;
}