pure css shadow scroll

gistfile1.txt

/* shadow scroll */
  background: linear-gradient(white 30%, rgba(255, 255, 255, 0)) center top,
    linear-gradient(rgba(255, 255, 255, 0), white 70%) center bottom,
    radial-gradient(
        farthest-side at 50% 0,
        rgba(0, 0, 0, 0.2),
        rgba(0, 0, 0, 0)
      )
      center top,
    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, 110% 12px, 110% 12px;
  background-attachment: local, local, scroll, scroll;