angularjs – 如何居中对齐表头？

<td data-title="'Access ID'" sortable="'accessID'" style="width:120px" class="text-center">{{people.accessID}}</td>

但我无法将列标题居中对齐,而是列数据.

以下是Access ID标头的源代码段.

<th ng-repeat="column in $columns" ng-class="{ 'sortable': parse(column.sortable),'sort-asc': params.sorting()[parse(column.sortable)]=='asc','sort-desc': params.sorting()[parse(column.sortable)]=='desc' }" ng-click="sortBy(column,$event)" ng-show="column.show(this)" ng-init="template=column.headerTemplateURL(this)" class="header  sortable"> <!-- ngIf: !template --><div ng-if="!template" ng-show="!template" ng-bind="parse(column.title)" class="ng-binding ng-scope">Access ID</div><!-- end ngIf: !template --> <!-- ngIf: template --> </th>

问题是,如何将ng-table中特定列的Header居中对齐？