<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/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 ----------> <form class="form-horizontal"> <fieldset> <!-- Form Name --> <legend>Decode Protocolo</legend> <!-- Text input--> <div class="form-group"> <label class="col-md-4 control-label" for="textinput">Datagrama</label> <div class="col-md-4"> <input id="textinput" name="textinput" type="text" placeholder="datagrama hexa" class="form-control input-md"> <span class="help-block">HEXA</span> </div> </div> <!-- Textarea --> <div class="form-group"> <label class="col-md-4 control-label" for="textarea">Tratado, sem ',': </label> <div class="col-md-4"> <textarea class="form-control" id="textarea" name="textarea"></textarea> </div> </div> <!-- Button (Double) --> <div class="form-group"> <label class="col-md-4 control-label" for="button1id">Ações</label> <div class="col-md-8"> <button id="button1id" name="button1id" class="btn btn-success">Decodificar</button> <button id="button2id" name="button2id" class="btn btn-danger">Limpar Datagrama</button> </div> </div> </fieldset> </form>