<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2>Caption hover effect </h2>
<p>Image caption with a text previewed in the bottom</p>
<p>Width size doesn´t matter</p>
</div>
<div class="row">
<div class="col-lg-3">
<div class="cuadro_intro_hover " style="background-color:#cccccc;">
<p style="text-align:center; margin-top:20px;">
<img src="http://trovacamporella.com/img/trovacamporella-fiat500.png" class="img-responsive" alt="">
</p>
<div class="caption">
<div class="blur"></div>
<div class="caption-text">
<h3 style="border-top:2px solid white; border-bottom:2px solid white; padding:10px;">THIS IS H3</h3>
<p>Loren ipsum dolor si amet ipsum dolor si amet ipsum dolor...</p>
<a class=" btn btn-default" href="http://trovacamporella.com"><span class="glyphicon glyphicon-plus"> INFO</span></a>
</div>
</div>
</div>
</div>
<div class="col-lg-3">
<div class="cuadro_intro_hover " style="background-color:#cccccc;">
<p style="text-align:center; margin-top:20px;">
<img src="http://placehold.it/500x330" class="img-responsive" alt="">
</p>
<div class="caption">
<div class="blur"></div>
<div class="caption-text">
<h3 style="border-top:2px solid white; border-bottom:2px solid white; padding:10px;">THIS IS H3</h3>