body::before {
  content: "";
  position: fixed;
  left: 0; right: 0; top: 0; bottom: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(to top, #020024 0%, rgba(2,0,36,0.0) 100%),
    url('/assets/images/fryslan.png') center var(--parallax-pos, 50%) no-repeat;
  background-size: cover;
  will-change: background-position;
  transition: background-position 0.2s;
}