<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 ----------> <div class="container"> <div class="row"> <div class="col-md-12"> <div class="alert alert-danger visible-lg" role="alert">File size: 750 KB <span class="badge pull-right">100%</span> </div> <div class="alert alert-warning visible-md" role="alert">File size: 355 KB <span class="badge pull-right">47% of original</span> </div> <div class="alert alert-info visible-sm" role="alert">File size: 239 KB <span class="badge pull-right">32% of original</span> </div> <div class="alert alert-success visible-xs" role="alert">File size: 55 KB <span class="badge pull-right">7.3% of original</span> </div> <img class="visible-lg" src="http://i.imgur.com/tGHlxc0.jpg" width="100%" alt="" title="File size= 750KB"> <img class="visible-md" src="http://i.imgur.com/huPSRaO.jpg" width="100%" alt="" title="File size= 355KB"> <img class="visible-sm" src="http://i.imgur.com/CiU2QTE.jpg" width="100%" alt="" title="File size= 239KB"> <img class="visible-xs" src="http://i.imgur.com/2A1sDg4.jpg" width="100%" alt="" title="File size= 55KB"> </div> </div> </div>