如何使用AngularJS将div向左滚动

I have a div like below:

我有一个如下所示的div：

<div class="col-xs-1 scroll-button"><i class="glyphicon glyphicon-chevron-left"></i> </div>
<div class="customer-ust-bant col-xs-22" id="letters">
    <box ng-repeat="lt in alph" name="{{lt}}" id="{{lt}}"></box>
</div>
<div class="col-xs-1 scroll-button" ng-click="gotoBottom()"><i class="glyphicon glyphicon-chevron-right"></i> </div>
<div