如何让'panel / well'动态环绕图像同时保持图像居中？ //使用Bootswatch / Bootstrap CSS

        <div class="container-fluid">
            <div class="row" align="center">
                <div class="panel panel-default" align="center">
                    <div id="<?php echo $main_content ?>" class="panel-heading">MY-HEADING-HERE</div>
                        <div class="panel-body">
                            <div class="col-md-6 col-md-offset-3">
                                My image/"timelapse" that utilizes 'jquery.innerfade.js' here. (VIEW THE SEPARATE CODE SNIPPET BELOW)
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div class="container-fluid">