.textscroller {
  position: relative;
  display: block;
  --height: auto;
  --animating-in-top: -20;
  --animating-out-top: 40;
}
.textscroller .text-item {
  display: block;
}
.textscroller.ready {
  height: var(--height);
}
.textscroller.ready .text-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}
.textscroller.ready .text-item.active {
  opacity: 1;
  pointer-events: all;
}
.textscroller.ready .text-item.animating-in {
  top: calc(var(--animating-in-top) * 1px);
  opacity: 0;
}