bootstrap响应下拉列表不是“填充”

Question

我有一个导航栏，当我将屏幕最小化到平板电脑模式时＃39;它正确地创建了一个折叠图标，但是子菜单（下拉菜单）没有填充或使其自身存在，它只是溢出现有的东西，并且最底层的菜单完全不显示。任何帮助将不胜感激，这是我的代码

<div class="navbar navbar-advanced" id="advanced-menu">
    <div class="navbar-inner"> <span class="visible-tablet">

        <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">

          <span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span>
        </button>
        </span>
        <div class="nav-collapse collapse">
            <ul class="nav pull-right">
                <li class="dropdown"> <a href="/admin.cgi?action=cp_global_cfg" class="dropdown-toggle" data-toggle="dropdown">

                Captive Portal<b class="caret"></b></a> 
                    <ul class="dropdown-menu">
                        <li> <a href="/admin.cgi?action=cp_global_cfg">Global Configuration</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_inst_cfg">Instance Configuration</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_vap_cfg">VAP Configuration</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_upload_bin">Upload Binary Files</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_web_custom">Web Customization</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_web_preview">Web Customization Preview</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_local_user">Local Users</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_local_group">Local Groups</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_auth_client">Authenticated Clients</a>

                        </li>
                        <li> <a href="/admin.cgi?action=cp_fail_client">Failed Authentication Clients</a>

                        </li>
                    </ul>
                </li>
            </ul>
        </div>
    </div>
</div>