.gallery-container {
  max-width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-gap: 13px;
  margin: 32px auto;
}
@media screen and (max-width:900px){

  .gallery-container {
  max-width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 13px;
  margin: 32px auto;
}
}
.gallery-container p a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  flex: 1;
}