<div style="width: 100%">
    <div id="sidebar_left" class="affix" style="padding-top: 0;min-height: 540px">
            <div id="sidebar-scroll nav sidebar-menu">
                <div class="sidebar-content">
                    <div class="panel" style="margin: 0;">
                        <div class="panel-heading">
                            <span class="panel-title">TREE</span>
                            <span class="panel-controls">
                                <a href="javascript:void(0)" ng-cli