如何去掉el-table中自带的边框线

/* 去掉表格整体左边和上边的线 */
.el-table--group, .el-table--border {
  border: none
}
 /* 去掉表格整体最下面的边框 */
.el-table::before {
  width: 0;
  height: 0;
}
/* 去掉表格整体最右边的边框 */
.el-table--group::after, .el-table--border::after {
  width: 0;
  height: 0;
}
/* 去掉表格横向的边框线 */
::v-deep .el-table th.el-table__cell.is-leaf, 
::v-deep .el-table td.el-table__cell {
    border: none;
}
/* 去掉表头上的边框线 */
::v-deep .el-table--border th.el-table__cell {
    border: none;
} 
/* 去掉表格纵向的边框线 */
.el-table--border .el-table__cell {
    border-right: none;
} 
/* 表头高度 */
::v-deep(.el-table th.el-table__cell) {
  min-height: 0 !important; 
  padding: 0 !important;
  height: 23px !important;
  line-height: 23px;
}

<el-table :data="tempData" :header-cell-style="{background: '#fff'}" :header-row-style="{height: '23px'}">
          <el-table-column label="排名" prop="rank" align="center" width="50"/>
          <el-table-column label="注册号" prop="num" align="center" width="70"/>
          <el-table-column label="姓名" prop="name">
            <template slot-scope="scope">
              <el-input v-if="isEditing" v-model="scope.row.name" @input="updateData(scope.row)"/>
              <span v-else>{{ scope.row.name }}</span>
            </template>
          </el-table-column>
          <el-table-column label="代表队" prop="team" align="center" width="140"></el-table-column>
          <el-table-column label="组" prop="series" align="center">
            <el-table-column v-for="(item, index) in 6" :key="index" :label="`${index + 1}`" align="center" width="70">
              <template slot-scope="scope">
                <!-- 判断是否编辑状态 -->
                <el-input
                  v-if="isEditing"
                  v-model="scope.row.series[index]"
                  @input="updateData(scope.row)"             
                />
                <span v-else>{{ scope.row.series[index] }}</span>
              </template>
            </el-table-column>
          </el-table-column>          
          <el-table-column label="总计" prop="total" align="center" width="80">
            <template slot-scope="scope">
              <el-input v-if="isEditing" v-model="scope.row.total" @input="updateData(scope.row)"/>
              <span v-else>{{ scope.row.total }}</span>
            </template>
          </el-table-column>
          <el-table-column label="备注" prop="remarks" align="center" width="130"></el-table-column>  
      </el-table>