.ol-miniscroll {
  position: relative;
}
.ol-miniscroll:hover .ol-scroll {
  opacity: .5;
  transition: opacity 1s;
}
.ol-miniscroll .ol-scroll {
  touch-action: none;
  position: absolute;
  right: 0px;
  width: 9px;
  height: auto;
  max-height: 100%;
  opacity: 0;
  border-radius: 9px;
  transition: opacity 1s .5s;
  overflow: hidden;
  z-index: 1;
}
.ol-miniscroll .ol-scroll > div {
  touch-action: none;
  position: absolute;
  top: 0;
  right: 0px;
  width: 9px;
  height: 9px;
  box-shadow: inset 10px 0 currentColor;
  border-radius: 9px / 12px;
  border: 2px solid transparent;
  box-sizing: border-box;
  cursor: pointer;
}
.ol-miniscroll .ol-scroll.ol-100pc {
  opacity: 0;
}