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Overflow scroll gradient  visual

Adds a fading gradient to an overflowing element to better indicate there is more content to be scrolled.

HTML
<div class="overflow-scroll-gradient">
  <div class="overflow-scroll-gradient__scroller">
    Lorem ipsum dolor sit amet consectetur adipisicing elit. <br />
    Iure id exercitationem nulla qui repellat laborum vitae, <br />
    molestias tempora velit natus. Quas, assumenda nisi. <br />
    Quisquam enim qui iure, consequatur velit sit? <br />
    Lorem ipsum dolor sit amet consectetur adipisicing elit.<br />
    Iure id exercitationem nulla qui repellat laborum vitae, <br />
    molestias tempora velit natus. Quas, assumenda nisi. <br />
    Quisquam enim qui iure, consequatur velit sit?
  </div>
</div>
CSS
.overflow-scroll-gradient {
  position: relative;
}
.overflow-scroll-gradient::after {
  content: '';
  position: absolute;
  bottom: 0;
  width: 250px;
  height: 25px;
  background: linear-gradient(
    rgba(255, 255, 255, 0.001),
    white
  ); /* transparent keyword is broken in Safari */
  pointer-events: none;
}
.overflow-scroll-gradient__scroller {
  overflow-y: scroll;
  background: white;
  width: 240px;
  height: 200px;
  padding: 15px;
  line-height: 1.2;
}
Demo
Lorem ipsum dolor sit amet consectetur adipisicing elit.
Iure id exercitationem nulla qui repellat laborum vitae,
molestias tempora velit natus. Quas, assumenda nisi.
Quisquam enim qui iure, consequatur velit sit?
Lorem ipsum dolor sit amet consectetur adipisicing elit.
Iure id exercitationem nulla qui repellat laborum vitae,
molestias tempora velit natus. Quas, assumenda nisi.
Quisquam enim qui iure, consequatur velit sit?
Explanation
  1. position: relative on the parent establishes a Cartesian positioning context for pseudo-elements.
  2. ::after defines a pseudo element.
  3. background-image: linear-gradient(...) adds a linear gradient that fades from transparent to white (top to bottom).
  4. position: absolute takes the pseudo element out of the flow of the document and positions it in relation to the parent.
  5. width: 240px matches the size of the scrolling element (which is a child of the parent that has the pseudo element).
  6. height: 25px is the height of the fading gradient pseudo-element, which should be kept relatively small.
  7. bottom: 0 positions the pseudo-element at the bottom of the parent.
  8. pointer-events: none specifies that the pseudo-element cannot be a target of mouse events, allowing text behind it to still be selectable/interactive.
Browser support

100.0%