<div
    class="tab-pane"
    data-ng-show="active"
    data-ng-class="{'is-active': active}">
    <ng-transclude></ng-transclude>
</div>

<div
    class="tab-pane tab-pane {{classes}}"
    data-ng-show="active"
    data-ng-class="{'is-active': active}">
    <ng-transclude></ng-transclude>
</div>

Add extra classes to pane too
Add extra classes to pane too
