ss="col-sm-12">
                        <div class="ibox float-e-margins">
                            <div class="text-center float-e-margins p-md">
                                <span>预览：</span>
                                <a href="#" class="btn btn-xs btn-primary" id="lightVersion">浅色</a>
                                <a href="#" class="btn btn-xs btn-primary" id="darkVersion">深色</a>
                                <a href="#" class="btn btn-xs btn-primary" id="leftVersion">布局�