.spacer .bg {
  --pad-top: 120px;
  padding-top: var(--pad-top);
  background-image: var(--bg-img-m);
  background-size: cover;
  background-position: top center;
  background-repeat: no-repeat;
}

@media screen and (min-width: 768px) {
  .spacer .bg {
    --pad-top: 200px;
    background-image: var(--bg-img);
  }
}