el-table 全选框 默认样式为文字 滑动变成单选框

    /deep/ .el-table__header-wrapper .el-checkbox {
      width: 55px;
      .el-checkbox__input {
        display: none;
      }
      &:hover {
        .el-checkbox__input {
          display: block;
        }
        &::before{
          display: none;
        }
      }
      &::before {
        content: "全选";
        text-align: center;
        color: rgb(144, 147, 153);
        font-size: 14px;
        font-weight: 600;
      }
    }