<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row text-center">
<h2>Hover effect </h2>
<p>Image caption with a text previewed in the bottom</p>
</div>
<div class="row">
<div class="col-lg-3">
<div class="cuadro_intro_hover " style="background-color:#cccccc;">
<p style="text-align:center;">
<img src="http://static.tumblr.com/166ab215c9a0bb3ba1b98e810652c3db/pjmcbps/OHEmr2kqz/tumblr_static_dsc_0298lol.jpg" 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;">Nav</h3>
<p>Loren ipsum dolor si amet ipsum dolor si amet ipsum dolor...</p>
<a class=" btn btn-default" href="https://plus.google.com/u/0/100371904807783155711/posts" target="_blank"><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;">
<img src="http://pixel.brit.co/wp-content/uploads/2014/08/724.jpg" 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;">Mehra</h3>