<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="form-group"> <div class="input-group"> <span class="input-group-addon"> <input type="text" value="" class="form-control" name="custom_name" placeholder="custompath"> </span> <span class="input-group-addon"> <input type="text" value="" class="form-control" name="custom_name" placeholder="custompath"> </span> <span class="input-group-addon"> <button class="add btn btn-primary" type="button" data-bind="click: addKeyValue">Add</button> </span> </div> </div>