.#{$scroll-bar-prefix-cls} {
  $root: #{&};
  position: relative;
  overflow: hidden;
  &-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: scroll;
  }
  &-outer.y {
    width: 6px;
    top: 2px;
  }

  &-outer {
    position: absolute;
    opacity: 1;
    right: 2px;
    bottom: 2px;
    border-radius: 3px;
  }

  &-inner {
    position: relative;
    display: block;
    cursor: pointer;
    border-radius: inherit;
    background-color: $gray-light-45;
    transition-duration: .3s;
    transition-property: background-color,opacity;
  }
  &-outer.x {
    left: 2px;
    #{$root}-inner {
      height: 6px;
    }
  }
  &-inner {
    &:hover {
      background-color: $gray-light-85;
    }
    &.move {
      background-color: $gray-light-85;
    }
  }
}