perfect-scrollbar.less

@scroll-width: 5px;

// Scrollbar mixins
.scrollbar-rail-default {
  display: none;
  position: absolute; /* please don't change 'position' */
  .border-radius(0px);
  .opacity(0);
  .transition(background-color .2s linear, opacity .2s linear);
}

.scrollbar-rail-hover {
  background-color: #eee;
  .opacity(0.9);
}

.scrollbar-default {
  position: absolute; /* please don't change 'position' */
  background-color: #aaa;
  .border-radius(0px);
  .transition(background-color .2s linear);
}

.scrollbar-hover {
  background-color: #999;
}

.in-scrolling {
  &.in-scrolling {
    .scrollbar-rail-hover;
  }
}

.ps-container {
  &.ps-active-x > .ps-scrollbar-x-rail,
  &.ps-active-y > .ps-scrollbar-y-rail {
    display: block;
  }

  >.ps-scrollbar-x-rail {
    .scrollbar-rail-default;
    bottom: 3px; /* there must be 'bottom' for ps-scrollbar-x-rail */
    height: 8px;
    z-index: 1000;

    >.ps-scrollbar-x {
      .scrollbar-default;
      bottom: 0; /* there must be 'bottom' for ps-scrollbar-x */
      height: 8px;
    }

    .in-scrolling;
  }

  >.ps-scrollbar-y-rail {
    .scrollbar-rail-default;
    right: 2px; /* there must be 'right' for ps-scrollbar-y-rail */
    width: @scroll-width;
    z-index: 1000;

    >.ps-scrollbar-y {
      .scrollbar-default;
      right: 0; /* there must be 'right' for ps-scrollbar-y */
      width: @scroll-width;
    }

    .in-scrolling;
  }

  &:hover {
    >.ps-scrollbar-x-rail,
    >.ps-scrollbar-y-rail {
      .opacity(0.6);
      .in-scrolling;
    }

    >.ps-scrollbar-x-rail:hover {
      .scrollbar-rail-hover;

      >.ps-scrollbar-x {
        .scrollbar-hover;
      }
    }

    >.ps-scrollbar-y-rail:hover {
      .scrollbar-rail-hover;

      >.ps-scrollbar-y {
        .scrollbar-hover;
      }
    }
  }
}