td内元素设置padding影响别的元素的宽度

我写了个组件，里面有几个td，最后一个td用于放置按钮
tpl：

<table class="table">
    <thead ui-component-thead items="vm.theads" sorting-fn="vm.sortingFn({item:item})">
    </thead>
    <tbody>
    <tr ng-repeat="tr in vm.trs">
        <td class="table--td" ng-repeat="td in vm.theads" ng-if="td.alias">
                                <span ng-if="td.alias == 'poster'">
                                    <img class="table--img img-thumbnail" ng-src="{{tr[td.alias]}}" alt="">
                                </span>
                                <span ng-if="td.alias != 'poster'">
                                    {{tr[td.alias]}}
                                </span>
        </td>
        <td class="table--td">
            <ui-component-list-button button="button" ng-repeat="button in tr.buttons" item = "tr"></ui-component-list-button>
            <!--<i class="icon wb-download" aria-hidden="true"></i>-->
            <!--<i class="icon wb-upload" aria-hidden="true"></i>-->
            <!--<i class="icon wb-trash" aria-hidden="true"></i>-->
            <!--<i class="icon wb-settings" aria-hidden="true"></i>-->
            <!--<i class="icon fa-key" aria-hidden="true"></i>-->
            <!--<i class="icon md-assignment-account" aria-hidden="true"></i>-->
        </td>
    </tr>
    </tbody>
</table>

结果现在的表现是放置的按钮越多，按钮的td越宽并且会影响别的td，控制台看了一下padding起到了一定程度的影响，应该怎么调整呀？