.product-media--grid,
.product-media--list {
  list-style: none;
}

.product-media--grid {
  display: flex;
  flex-wrap: wrap;
}

.product-media--grid-item {
  flex-basis: 50%;
  flex-grow: 1;
}

.product-media--grid-item:first-of-type {
  flex-basis: 100%;
}