<section class="button-group" role="group">
  <button class="button button-tertiary">
    <i class="fa fa-caret-left"></i>
    Left
  </button>
  <button class="button button-tertiary">Middle</button>
  <button class="button button-tertiary">
    Right
    <i class="fa fa-caret-right"></i>
  </button>
</section>