JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
 <div class="container-fluid">

            <div class="row-fluid">

                <div class="col-lg-12">
                    <h1 class="page-header text-center">Photos</h1>
                </div>
                
                
                <div class="col-md-3 col-sm-4 col-xs-6 thumb">
   <div class="thumbnail" href="#">
      <a href="#"><img class="img-responsive" src="http://placehold.it/400x266" alt=""></a>
      <div class="caption">                                                
        <a href="#" class="btn btn-shopping btn-responsive"><i class="glyphicon glyphicon-shopping-cart"></i></a>
      </div>
   </div>
</div> 

<div class="col-md-3 col-sm-4 col-xs-6 thumb">
   <div class="thumbnail" href="#">
      <a href="#"><img class="img-responsive" src="http://placehold.it/400x266" alt=""></a>
      <div class="caption">                                                
        <a href="#" class="btn btn-shopping btn-responsive"><i class="glyphicon glyphicon-shopping-cart"></i></a>
      </div>
   </div>
</div> 

<div class="col-md-3 col-sm-4 col-xs-6 thumb">
   <div class="thumbnail" href="#">
      <a href="#"><img class="img-responsive" src="http://placehold.it/175x266" alt=""></a>
      <div class="caption">                                                
        <a href="#" class="btn btn-shopping btn-responsive"><i class="glyphicon glyphicon-shopping-cart"></i></a>
      </div>
   </div>
</div> 

 <div class="col-md-3 col-sm-4 col-xs-6 thumb">
   <div class="thumbnail" href="#">
      <a href="#"><img class="img-responsive" src="http://placehold.it/175x266" alt=""></a>
      <div class="caption">                                                
        <a href="#" class="btn btn-shopping btn-responsive"><i class="glyphicon glyphicon-shopping-cart"></i></a>
     ...

CSS

.thumbnail > a {
    display: block;
    height: 200px;
    /* for center alignment */
    position: relative;
}
.thumbnail > a > img {
    max-width: 100%;
    max-height: 100%;
    /* for center alignment */
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin-top: auto;
    margin-bottom: auto;
}