body {
  height: 100vh;
}

@media (min-width: 921px) {
  html {
    background: url("assets/PREVIEW_DESKTOP_wip_landing.jpg") no-repeat center;
    background-size: cover;
  }
}

@media (max-width: 920px) {
  html {
    background: url("assets/PREVIEW_MOBILE_wip_landing.jpg") no-repeat center
      fixed;
    background-size: cover;
  }
}