.ui-Dropdown-wrap{
  position: relative;
  > .tipWrap {
    min-width: 100px;
    background-color: white;
    cursor: pointer;
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 10;
    height: 0;
    transition: height 150ms;
    overflow: hidden;
    transform: translateY(calc(100% + 2px));
    > .tip {
      width: 100%;
      white-space: nowrap;
      display: flex;
      flex-direction: column;
      gap: 4px;
      border-radius: 3px;
      border:1px solid rgba(0,0,0,.1);
      line-height: 1.5em;
      max-height: 10em;
      overflow-y: auto;
      &::-webkit-scrollbar {
        //整个滚动条的宽高设置
        width: 6px; //宽高只有一个能生效，如果是横向滚动条高度生效，纵向滚动条宽度生效
        height: 8px;
      }
      &::-webkit-scrollbar-thumb {
        //滚动条滑块的设置
        border-radius: 3px;
        -moz-border-radius: 3px;
        -webkit-border-radius: 3px;
        background-color: #c3c3c3;
      }
      &::-webkit-scrollbar-track {
        //滚动条轨道设置
        background-color: transparent;
      }
      > .perTip {
        padding: 0 10px;
        &:first-child {
          margin-top: 10px;
        }
        &:last-child {
          margin-bottom: 10px;
        }
        &:hover {
          background-color: rgba(100, 100, 100, 0.2);
        }
      }
    }
  }
}