element ui设置表格表头高度和每一行的高度

.el-table__header tr,
        .el-table__header th {
            padding: 0;
            height: 30px;
            line-height: 30px;
        }
        .el-table__body tr,
        .el-table__body td {
            padding: 0;
            height: 30px;
            line-height: 30px;
        }