antd-mobile/lib/slider/style/tooltip.less

基于 React 的移动设计规范实现

.am-tooltip {
  position: absolute;
  left: -9999px;
  top: -9999px;
  z-index: 4;
  visibility: visible;
  box-sizing: border-box;

  &-hidden {
    display: none;
  }

  &-placement-top {
    padding: @tooltip-arrow-width 0 @tooltip-distance 0;
  }

  &-inner {
    padding: 12px 4px;
    min-width: 48px;
    height: 32px;
    font-size: @font-size-subhead;
    line-height: 1;
    color: @tooltip-color;
    text-align: center;
    text-decoration: none;
    background-color: @tooltip-bg;
    border-radius: @radius-xs;
    // box-shadow: 0 0 4px #d9d9d9;
  }

  &-arrow {
    position: absolute;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
  }

  &-placement-top &-arrow {
    bottom: @tooltip-distance - @tooltip-arrow-width;
    left: 50%;
    margin-left: -@tooltip-arrow-width;
    border-width: @tooltip-arrow-width @tooltip-arrow-width 0;
    border-top-color: @tooltip-arrow-color;
  }
}