ef">
  <div class="index">
    X
  </div>
  <div class="orthogonal">
    X
  </div>
</div>

<div class="grid content ref">
  <div class="index">
    X
  </div>
  <div class="percent">
    X
  </div>
</div>

<div class="grid content ref">
  <div class="index">
    X
  </div>
  <div class="orthogonal">
    X
  </div>
</div>
