<article>
  <section>
    <div class="fill">
      <div class="fill-content">
        <div taw-code ng-model="group"></div>
      </div>
    </div>
  </section>
  <section>
    <div class="fill">
      <div class="fill-content">
        <div taw-invitation></div>
      </div>
    </div>
  </section>
</article>

<article>
  <section ng-class="{'hidden-left':0<focus}">
    <div class="fill">
      <div class="fill-content">
        <div taw-code ng-model="session.group"></div>
      </div>
    </div>
  </section>
  <section ng-class="{'hidden-left':1<focus,'hidden-right':focus<1}">
    <div class="fill">
      <div class="fill-content">
        <div taw-invitation ng-model="session.group"></div>
      </div>
    </div>
  </section>
</article>

Select the card by focus.
Select the card by focus.
