<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <form class="form-horizontal"> <fieldset> <!-- Form Name --> <legend>Site Security</legend> <!-- Password input--> <div class="form-group" > <label class="col-md-12 control-label" for="passwordinput">Enter Your Password </label> <div class="col-md-12"> <input id="passwordinput" size="10" name="passwordinput" type="password" placeholder="******" class="form-control input-lg" required=""> </div> </div> </fieldset> </form> </div> </div>