<div class="row equal-height">
  <div class="hidden-xs equal-height-trigger"></div>

  <div class="col-sm-6 col-md-3">
    <div class="card">
      <div class="inner">
        <header>
          <h3>Lorem</h3>
        </header>
        <p>Lorem ipsum Veniam eiusmod sunt velit deserunt ullamco cillum Duis dolore anim nulla Ut pariatur pariatur labore non esse qui proident ad.</p>
      </div>
    </div>
  </div>

  <div class="col-sm-6 col-md-3">
    <div class="card" data-slug="<?php echo $slug; ?>">
      <div class="inner">
        <header>
          <h3>Ipsum</h3>
        </header>
        <p>Lorem ipsum Commodo aliqua anim quis quis quis esse labore laboris consectetur qui.</p>
      </div>
    </div>
  </div>

  <div class="col-sm-6 col-md-3">
    <div class="card" data-slug="<?php echo $slug; ?>">
      <div class="inner">
        <header>
          <h3>Foo</h3>
        </header>
        <p>Lorem ipsum Est in aliquip commodo et ullamco in fugiat aute consectetur elit incididunt deserunt. Lorem ipsum Dolor consequat ea amet eiusmod.</p>
      </div>
    </div>
  </div>

</div>