Template:Scrollbox/styles.css

.scrollbox__container::before {
  position: relative;
}
.scrollbox__container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 99999;
}
.scrollbox__inner {
  display: block ruby;
  overflow-x: scroll;
}