Edit in JSFiddle

<div class="desk">
    <span class="bench bench-1"></span>
    <span class="bench bench-2"></span>

    <span class="leg leg-2"></span>
    <span class="leg leg-3"></span>
    <span class="leg leg-1"></span>
    <span class="leg leg-4"></span>
  </div>
  <!-- .desk -->