<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<hr>
<div class="container">
<div class="row">
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
<div class="col-xs-18 col-sm-6 col-md-3">
<div class="thumbnail">
<img src="http://placehold.it/500x350/EEE">
<div class="caption">
<h4>Thumbnail label</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facere, soluta, eligendi doloribus sunt minus amet sit debitis repellat. Consectetur, culpa itaque odio similique suscipit</p>
</div>
</div>
</div>
</div><!--/row-->
</div><!--/container -->
.thumbnail {
padding:0;
}
.thumbnail:hover {
cursor: pointer;
box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 1);
}