                 </ul>
                            <a class="close-link">
                                <i class="fa fa-times"></i>
                            </a>
                        </div>
                    </div>
                    <div class="text-center">
                        <h4>工具提示示例 <small>深色背景</small></h4>
                        <div>
                            <button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="left" titl