<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="alert alert-success" role="alert">hii wall.</div> <div class="alert alert-info" role="alert">Oh snap! Change a few things up and try submitting again. </div> <div class="alert alert-warning" role="alert">Oh snap! Change a few things up and try submitting again. </div> <div class="alert alert-danger" role="alert">.Oh snap! Change a few things up and try submitting again. .</div> </div> </div>