<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> <!------ Include the above in your HEAD tag ----------> <!-- /.container --> <section id="photosxxx" class="dark-bg-3"> <div class="container"> <div class="row"> <div class="col-xs-4 nopadding"> <a class="light" href="images/amsterdam.jpg" data-imagelightbox="a"><img class="img-responsive" src="images/amsterdam-web.jpg" alt="Sunset over Plateliai lake"></a> </div> <div class="col-xs-4 nopadding"> <a class="light" href="images/toronto.jpg" data-imagelightbox="a"><img class="img-responsive" src="images/toronto-web.jpg" alt="Sunset over Plateliai lake"></a> </div> <div class="col-xs-4 nopadding"> <a class="light" href="images/queen-street.jpg" data-imagelightbox="a"><img class="img-responsive" src="images/queen-street-web.jpg" alt="Sunset over Plateliai lake"></a> </div> </div> </div> </section> <section id="portfolio" class="dark-bg-4">