<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"> <form class="form-horizontal"> <fieldset> <!-- Form Name --> <legend>Form Name</legend> <!-- Text input--> <div class="form-group"> <label class="col-md-4 control-label" for="city">La météo de quelle ville ?</label> <div class="col-md-4"> <input id="city" name="city" type="text" placeholder="Votre ville" class="form-control input-md" required=""> <span class="help-block">Londres, Rome ...</span> </div> </div> </fieldset> </form> </div> </div>