TmMolStar/src/mol-app/skin/components/slider.scss

@mixin borderBox {
    box-sizing: border-box;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0); //  remove tap highlight color for mobile safari

    * {
      box-sizing: border-box;
      -webkit-tap-highlight-color: rgba(0, 0, 0, 0); //  remove tap highlight color for mobile safari
    }
  }

  .molstar-slider-base {
    position: relative;
    height: 14px;
    padding: 5px 0;
    width: 100%;
    border-radius: $slider-border-radius-base;
    @include borderBox;

    &-rail {
      position: absolute;
      width: 100%;
      background-color: $border-color;
      height: 4px;
      border-radius: 2px;
    }

    &-track {
      position: absolute;
      left: 0;
      height: 4px;
      border-radius: $slider-border-radius-base;
      background-color: tint($font-color, 60%);
    }

    &-handle {
      position: absolute;
      margin-left: -11px;
      margin-top: -9px;
      width: 22px;
      height: 22px;
      cursor: pointer;
      border-radius: 50%;
      background-color: $font-color;
      border: 4px solid $border-color;

      &:hover {
        background-color: $hover-font-color;
      }
    }

    &-mark {
      position: absolute;
      top: 18px;
      left: 0;
      width: 100%;
      font-size: 12px;
    }

    &-mark-text {
      position: absolute;
      display: inline-block;
      vertical-align: middle;
      text-align: center;
      cursor: pointer;
      color: #999;

      &-active {
        color: #666;
      }
    }

    &-step {
      position: absolute;
      width: 100%;
      height: 4px;
      background: transparent;
    }

    &-dot {
      position: absolute;
      bottom: -2px;
      margin-left: -4px;
      width: 8px;
      height: 8px;
      border: 2px solid #e9e9e9;
      background-color: #fff;
      cursor: pointer;
      border-radius: 50%;
      vertical-align: middle;
      &:first-child {
        margin-left: -4px;
      }
      &:last-child {
        margin-left: -4px;
      }
      &-active {
        border-color: tint($font-color, 50%);
      }
    }

    &-disabled {
      background-color: #e9e9e9;

      .molstar-slider-base-track {
        background-color: $slider-disabledColor;
      }

      .molstar-slider-base-handle, .molstar-slider-base-dot {
        border-color: $slider-disabledColor;
        background-color: #fff;
        cursor: not-allowed;
      }

      .molstar-slider-base-mark-text, .molstar-slider-base-dot {
        cursor: not-allowed!important;
      }
    }
  }

  .molstar-slider-base-vertical {
    width: 14px;
    height: 100%;
    padding: 0 5px;

    .molstar-slider-base {
      &-rail {
        height: 100%;
        width: 4px;
      }

      &-track {
        left: 5px;
        bottom: 0;
        width: 4px;
      }

      &-handle {
        margin-left: -5px;
        margin-bottom: -7px;
      }

      &-mark {
        top: 0;
        left: 18px;
        height: 100%;
      }

      &-step {
        height: 100%;
        width: 4px;
      }

      &-dot {
        left: 2px;
        margin-bottom: -4px;
        &:first-child {
          margin-bottom: -4px;
        }
        &:last-child {
          margin-bottom: -4px;
        }
      }
    }
  }