.ScrollShadow {
  background: /* Shadow Cover TOP */
    linear-gradient(oklch(var(--b1)) 30%, rgba(255, 255, 255, 0)) center top,
    /* Shadow Cover BOTTOM */ linear-gradient(rgba(255, 255, 255, 0), oklch(var(--b1)) 70%) center bottom,
    /* Shadow TOP */ radial-gradient(farthest-side at 50% 0, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0)) center top,
    /* Shadow BOTTOM */ radial-gradient(farthest-side at 50% 100%, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0)) center bottom;

  background-repeat: no-repeat;
  background-size:
    100% 40px,
    100% 40px,
    100% 14px,
    100% 14px;
  background-attachment: local, local, scroll, scroll;
}