@media (min-width: 768px) and (pointer: coarse) {
  body.custom-background {
    position: relative;
    z-index: 0;
  }
  body.custom-background::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100lvh;
    z-index: -1;
    background-image: inherit;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }
}