section.products {
display: table;
width: 100%;
table-layout: fixed;
border: 1px dotted gray;
}
section.products > article {
display: table-cell;
width: 33%;
border: 1px dotted gray;
}
section.products > article.blocky {
display: block;
}
<section class="products">
<article>Article One Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
<article>Article Two Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
<article>Article Three Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
</section>
<h2>Example 2</h2>
<section class="products">
<article>Article One Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
</section>
<h2>Example 3</h2>
<section class="products">
<article style="width: 33%;">Article One Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
</section>
<h2>Example 4</h2>
<section class="products">
<article class="blocky" style="width: 33%;">Article One Donec adipiscing, lorem non euismod venenatis, diam orci tincidunt magna, ut interdum magna arcu vel elit. Nunc molestie lacus non urna eleifend mattis. Praesent ipsum nulla, tempor malesuada lacinia quis, elementum et tellus. </article>
</section>