<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/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-lg-4"> </div> <div class="col-lg-4"> <h2 class="text-muted">Se connecter</h2> <form action="" method="post"> <div class="form-group"> <input type="text" class="form-control" placeholder="Identifiant de l'annuaire"> </div> <div class="form-group"> <input type="password" class="form-control" placeholder="Mot de passe de l'annuaire"> </div> <div class="form-group"> <input type="submit" class="btn btn-success" value="Se connecter"> </div> </form> </div> </div> </div>