/* Keep responsive image sources out of the Grey section's grid. */
.grey > picture {
  display: block !important;
  min-width: 0;
  height: 100%;
}
.grey > picture > source { display: none; }
.grey > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 720px;
  object-fit: cover;
}
@media (max-width: 850px) {
  .grey > picture > img { min-height: 500px; }
}