element ui 在 IE9和IE10下 表格组件的边框消失

Question

1, element ui 版本1.4.8; 在IE下 边框消失;

2, 鼠标hover到行的时候 出现边框; 谷歌浏览器正常;
如图

代码如下

` <el-table

                ref="multipleTable"
                :data="tableData3"
                border
                tooltip-effect="dark"
                style="width: 100%;"
                @selection-change="handleSelectionChange">
            <el-table-column
                    type="selection"
                    label="全选"
                    align="center"
                    width="55">
            </el-table-column>
            <el-table-column
                    prop="nickname"
                    label="用户名"
                    align="center"
                    width="120">
            </el-table-column>
            <el-table-column
                    prop="name"
                    label="姓名"
                    align="center"
                    width="120">
            </el-table-column>
            <el-table-column
                    prop="sex"
                    label="性别"
                    align="center"
                    show-overflow-tooltip>
            </el-table-column>
            <el-table-column
                    prop="identity"
                    label="角色身份"
                    align="center"
                    show-overflow-tooltip>
            </el-table-column>
            <el-table-column
                    prop="contact"
                    label="联系方式"
                    align="center"
                    show-overflow-tooltip>
            </el-table-column>
            <el-table-column label="操作" align="center">
                <!--此处操作需封装为小组件-->
                <template slot-scope="scope">
                    <el-button
                            size="small">通过
                    </el-button>
                    <el-button
                            size="small"
                            type="danger">忽略
                    </el-button>
                </template>
            </el-table-column>
        </el-table>
        
        data () {
  return {
    formInline: {
      identity: '',
      status: '',
      name: '',
      nickname: ''
    },
    tableData3: [{
      nickname: 'sdffsd',
      name: '王小虎',
      sex: '男',
      identity: '普通成员',
      contact: ''
    }],
    multipleSelection: []
  };
} `