@arco-design/web-vue/lib/scrollbar/style/index.less

Arco Design Vue 2.0: A Vue.js 3 UI Library

@import './token.less';

@scroll-prefix-cls: ~'@{prefix}-scrollbar';

.@{scroll-prefix-cls} {
  position: relative;

  &-container {
    position: relative;
    scrollbar-width: none;

    &::-webkit-scrollbar {
      display: none;
    }
  }

  &-track {
    position: absolute;
    z-index: 100;

    &-direction-horizontal {
      bottom: 0;
      left: 0;
      box-sizing: border-box;
      width: 100%;
      height: @scrollbar-track-size;
    }

    &-direction-vertical {
      top: 0;
      right: 0;
      box-sizing: border-box;
      width: @scrollbar-track-size;
      height: 100%;
    }
  }

  &-thumb {
    position: absolute;
    display: block;
    box-sizing: border-box;

    &-bar {
      width: 100%;
      height: 100%;
      background-color: @scrollbar-thumb-bar-bg_color;
      border-radius: @scrollbar-thumb-bar-border_radius;
    }

    &:hover,
    &-dragging {
      .@{scroll-prefix-cls}-thumb-bar {
        background-color: @scrollbar-thumb-bar-bg_color_hover;
      }
    }

    &-direction-horizontal {
      .@{scroll-prefix-cls}-thumb-bar {
        height: @scrollbar-thumb-bar-size;
        margin: ((@scrollbar-track-size - @scrollbar-thumb-bar-size)/2) 0;
      }
    }

    &-direction-vertical {
      .@{scroll-prefix-cls}-thumb-bar {
        width: @scrollbar-thumb-bar-size;
        margin: 0 ((@scrollbar-track-size - @scrollbar-thumb-bar-size)/2);
      }
    }
  }

  &&-type-embed {
    .@{scroll-prefix-cls}-thumb {
      opacity: 0;

      &-dragging {
        opacity: 0.8;
      }

      transition: opacity ease 200ms;
    }

    &:hover {
      .@{scroll-prefix-cls}-thumb {
        opacity: 0.8;
      }
    }
  }

  &&-type-track {
    .@{scroll-prefix-cls}-track {
      background-color: @scrollbar-track-bg_color;

      &-direction-horizontal {
        border-top: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
        border-bottom: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
      }

      &-direction-vertical {
        border-right: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
        border-left: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
      }
    }

    .@{scroll-prefix-cls}-thumb {
      &-direction-horizontal {
        margin: -@scrollbar-track-border_size 0;
      }

      &-direction-vertical {
        margin: 0 -@scrollbar-track-border_size;
      }
    }

    &.@{scroll-prefix-cls}-both {
      .@{scroll-prefix-cls}-track-direction-vertical::after {
        position: absolute;
        right: -@scrollbar-track-border_size;
        bottom: 0;
        display: block;
        box-sizing: border-box;
        width: @scrollbar-track-size;
        height: @scrollbar-track-size;
        background-color: @scrollbar-track-bg_color;
        border-right: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
        border-bottom: @scrollbar-track-border_size solid
          @scrollbar-track-border_color;
        content: '';
      }
    }
  }
}