ul.images {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 0.75rem;
  justify-content: space-between;

  li {
    margin-bottom: 1em;
  }

  img {
    background-color: white;
    max-width: calc(100% - 0.5rem);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
    border-radius: 2px;
    padding: 0.25rem;
  }
}

@media (min-width: 380px) {
  ul.images { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 590px) {
  ul.images { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 820px) {
  ul.images { grid-template-columns: repeat(5, 1fr); }
}

@media (min-width: 1000px) {
  ul.images { grid-template-columns: repeat(6, 1fr); }
}