<div class="centered">
<section class="cards">
<article class="card">
<p>content for card one</p>
</article><!-- /card-one -->
<article class="card">
<p>content for card two</p>
</article><!-- /card-two -->
<article class="card">
<p>content for card three</p>
</article><!-- /card-three -->
<article class="card">
<p>content for card four</p>
</article><!-- /card-four -->
</section>
</div>