Basic thumbnails with custom or default sizing.
<div class="row">
<div class="col-sm-6 col-md-3">
<div class="thumbnail">
<h3>Thumbnail Heading</h3>
<img data-src="holder.js/100%x120" alt="...">
<div class="caption">
<p>...</p>
<p><a href="#" class="btn btn-default" role="button">Button</a></p>
</div>
</div>
</div>
</div>