vue pc商城仿网易严选商品的分类效果

               <!-- 分类 -->
                <li
                  v-for="(item,i) in categoryList"
                  :key="i"
                  class="categoryBox"
                  :class="{‘active‘:i === choosePage}"
                  @click="goCategoryPage(item.id,i)"
                  @mouseover="mouseoverEvent(item.children)"
                >
                  <div class="categoryName cursor">{{item.categoryName}}</div>

                  <ul class="categoryList2" ref="categoryPopRef">
                    <li
                      v-for="(stem,d) in categoryList2"
                      :key="d"
                      class="categoryItem2"
                    >
                      <div
                        class="categoryName2 cursor"
                        @click="goCategoryPage(stem.id,i)"
                      >{{stem.categoryName}}</div>

                      <ul class="categoryList3">
                        <li
                          v-for="(titem,t) in stem.children"
                          :key="t"
                          class="categoryItem3"
                          @click="goCategoryPage(titem.id,i)"
                        >
                          <div class="categoryName3 cursor">{{titem.categoryName}}</div>
                        </li>
                      </ul>
                    </li>
                  </ul>
                </li>

 li {
      padding-left: 2px;
      padding-right: 30px;     

      &.categoryBox {
        // background: rgba(0, 0, 0, 0.5);
        color: #666;
        .categoryName {
          font-weight: bold;
          position: relative;
        }

        .categoryList2 {
          position: absolute;
          min-width: 100%;
          max-width: 120%;
          top: 70px;
          left: 50%;
          transform: translateX(-50%);
          background-color: #fff;
          display: flex;
          padding: 20px 30px;
          min-height: 200px;
          border: 1px solid #dcdcdc;
          color: #666;
          display: none;
          // visibility:hidden;
          .categoryItem2 {
            // background: rgba(0, 0, 0, 0.5);
            margin-right: 20px;
            font-size: 16px;
            min-width: 100px;
            max-width: 200px;
            line-height: 36px;
            .categoryName2 {
              font-weight: bold;
              min-width: 100px;
              max-width: 200px;
              border-bottom: 1px solid #bdbdbd;
              &:hover {
                // color: #5683ea;
                color: #f4364c;
              }
            }

            .categoryList3 {
              padding: 20px 0;
              // width: 100%;
              display: flex;
              flex-wrap: wrap;
              max-height: 400px;
              overflow-x: hidden;
              overflow-y: auto;
              -webkit-overflow-scrolling: touch;

              .categoryItem3 {
                .categoryName3 {
                  font-weight: normal;
                  width: 100px;
                  // background: rgba(0, 0, 0, 0.5);
                  margin-right: 10px;
                  font-size: 15px;
                  line-height: 26px;
                  &:hover {
                    // color: #5683ea;
                    color: #f4364c;
                  }
                }
              }
            }
          }
        }

        &:hover {
          .categoryName{
            color: #f4364c;
          }
          .categoryList2 {
            display: flex;
            // visibility: visible;
          }
        }

        &.active {
          font-weight: bold;
          color: #666;
        }
      }
    }