src/app/core/side-panel/side-panel.html

<section class="xos-side-panel">
    <div class="row">
        <div class="col-xs-12 text-right">
            <i class="fa fa-remove" ng-click="vm.close()"></i>
        </div>
    </div>
    <div class="row">
        <div class="col-xs-12" id="side-panel-container">

        </div>
    </div>
</section>