如何使导航菜单滚动？

Question

这里的演示界面：

https://blackrockdigital.github.io/startbootstrap-sb-admin-2/pages/index.html

如果添加 css 类 “navbar-fixed-top”到元素

<nav class="navbar navbar-default navbar-static-top" role="navigation" style="margin-bottom: 0">

你会得到以下元素：

<nav class="navbar navbar-default navbar-static-top navbar-fixed-top" role="navigation" style="margin-bottom: 0">

现在，如果您尝试滚动页面的主要内容，内容仍会按预期滚动。

但如果您尝试滚动导航菜单，则它是不可滚动的。

如何使导航菜单像主要内容一样可滚动，但仍保持固定的标题？

Answer 1

**You just need to take sidebar out of navbar like below**

    <nav class="navbar navbar-default navbar-fixed-top" role="navigation" style="width: 100%;">
                <div class="navbar-header">
                    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                        <span class="sr-only">Toggle navigation</span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                    </button>
                    <a class="navbar-brand" href="index.html">SB Admin v2.0</a>
                </div>
                <!-- /.navbar-header -->

                <ul class="nav navbar-top-links navbar-right">
                    <li class="dropdown">
                        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                            <i class="fa fa-envelope fa-fw"></i> <i class="fa fa-caret-down"></i>
                        </a>
                        <ul class="dropdown-menu dropdown-messages">
                            <li>
                                <a href="#">
                                    <div>
                                        <strong>John Smith</strong>
                                        <span class="pull-right text-muted">
                                            <em>Yesterday</em>
                                        </span>
                                    </div>
                                    <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <strong>John Smith</strong>
                                        <span class="pull-right text-muted">
                                            <em>Yesterday</em>
                                        </span>
                                    </div>
                                    <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <strong>John Smith</strong>
                                        <span class="pull-right text-muted">
                                            <em>Yesterday</em>
                                        </span>
                                    </div>
                                    <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a class="text-center" href="#">
                                    <strong>Read All Messages</strong>
                                    <i class="fa fa-angle-right"></i>
                                </a>
                            </li>
                        </ul>
                        <!-- /.dropdown-messages -->
                    </li>
                    <!-- /.dropdown -->
                    <li class="dropdown">
                        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                            <i class="fa fa-tasks fa-fw"></i> <i class="fa fa-caret-down"></i>
                        </a>
                        <ul class="dropdown-menu dropdown-tasks">
                            <li>
                                <a href="#">
                                    <div>
                                        <p>
                                            <strong>Task 1</strong>
                                            <span class="pull-right text-muted">40% Complete</span>
                                        </p>
                                        <div class="progress progress-striped active">
                                            <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
                                                <span class="sr-only">40% Complete (success)</span>
                                            </div>
                                        </div>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <p>
                                            <strong>Task 2</strong>
                                            <span class="pull-right text-muted">20% Complete</span>
                                        </p>
                                        <div class="progress progress-striped active">
                                            <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100" style="width: 20%">
                                                <span class="sr-only">20% Complete</span>
                                            </div>
                                        </div>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <p>
                                            <strong>Task 3</strong>
                                            <span class="pull-right text-muted">60% Complete</span>
                                        </p>
                                        <div class="progress progress-striped active">
                                            <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%">
                                                <span class="sr-only">60% Complete (warning)</span>
                                            </div>
                                        </div>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <p>
                                            <strong>Task 4</strong>
                                            <span class="pull-right text-muted">80% Complete</span>
                                        </p>
                                        <div class="progress progress-striped active">
                                            <div class="progress-bar progress-bar-danger" role="progressbar" aria-valuenow="80" aria-valuemin="0" aria-valuemax="100" style="width: 80%">
                                                <span class="sr-only">80% Complete (danger)</span>
                                            </div>
                                        </div>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a class="text-center" href="#">
                                    <strong>See All Tasks</strong>
                                    <i class="fa fa-angle-right"></i>
                                </a>
                            </li>
                        </ul>
                        <!-- /.dropdown-tasks -->
                    </li>
                    <!-- /.dropdown -->
                    <li class="dropdown">
                        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                            <i class="fa fa-bell fa-fw"></i> <i class="fa fa-caret-down"></i>
                        </a>
                        <ul class="dropdown-menu dropdown-alerts">
                            <li>
                                <a href="#">
                                    <div>
                                        <i class="fa fa-comment fa-fw"></i> New Comment
                                        <span class="pull-right text-muted small">4 minutes ago</span>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <i class="fa fa-twitter fa-fw"></i> 3 New Followers
                                        <span class="pull-right text-muted small">12 minutes ago</span>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <i class="fa fa-envelope fa-fw"></i> Message Sent
                                        <span class="pull-right text-muted small">4 minutes ago</span>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <i class="fa fa-tasks fa-fw"></i> New Task
                                        <span class="pull-right text-muted small">4 minutes ago</span>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a href="#">
                                    <div>
                                        <i class="fa fa-upload fa-fw"></i> Server Rebooted
                                        <span class="pull-right text-muted small">4 minutes ago</span>
                                    </div>
                                </a>
                            </li>
                            <li class="divider"></li>
                            <li>
                                <a class="text-center" href="#">
                                    <strong>See All Alerts</strong>
                                    <i class="fa fa-angle-right"></i>
                                </a>
                            </li>
                        </ul>
                        <!-- /.dropdown-alerts -->
                    </li>
                    <!-- /.dropdown -->
                    <li class="dropdown">
                        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                            <i class="fa fa-user fa-fw"></i> <i class="fa fa-caret-down"></i>
                        </a>
                        <ul class="dropdown-menu dropdown-user">
                            <li><a href="#"><i class="fa fa-user fa-fw"></i> User Profile</a>
                            </li>
                            <li><a href="#"><i class="fa fa-gear fa-fw"></i> Settings</a>
                            </li>
                            <li class="divider"></li>
                            <li><a href="login.html"><i class="fa fa-sign-out fa-fw"></i> Logout</a>
                            </li>
                        </ul>
                        <!-- /.dropdown-user -->
                    </li>
                    <!-- /.dropdown -->
                </ul>
                <!-- /.navbar-top-links -->


                <!-- /.navbar-static-side -->
       </nav>
    <div class="navbar-default sidebar " role="navigation">
                <div class="sidebar-nav navbar-collapse">
                    <ul class="nav in" id="side-menu">
                        <li class="sidebar-search">
                            <div class="input-group custom-search-form">
                                <input type="text" class="form-control" placeholder="Search...">
                                <span class="input-group-btn">
                                <button class="btn btn-default" type="button">
                                    <i class="fa fa-search"></i>
                                </button>
                            </span>
                            </div>
                            <!-- /input-group -->
                        </li>
                        <li>
                            <a href="index.html" class="active"><i class="fa fa-dashboard fa-fw"></i> Dashboard</a>
                        </li>
                        <li>
                            <a href="#"><i class="fa fa-bar-chart-o fa-fw"></i> Charts<span class="fa arrow"></span></a>
                            <ul class="nav nav-second-level collapse">
                                <li>
                                    <a href="flot.html">Flot Charts</a>
                                </li>
                                <li>
                                    <a href="morris.html">Morris.js Charts</a>
                                </li>
                            </ul>
                            <!-- /.nav-second-level -->
                        </li>
                        <li>
                            <a href="tables.html"><i class="fa fa-table fa-fw"></i> Tables</a>
                        </li>
                        <li>
                            <a href="forms.html"><i class="fa fa-edit fa-fw"></i> Forms</a>
                        </li>
                        <li>
                            <a href="#"><i class="fa fa-wrench fa-fw"></i> UI Elements<span class="fa arrow"></span></a>
                            <ul class="nav nav-second-level collapse">
                                <li>
                                    <a href="panels-wells.html">Panels and Wells</a>
                                </li>
                                <li>
                                    <a href="buttons.html">Buttons</a>
                                </li>
                                <li>
                                    <a href="notifications.html">Notifications</a>
                                </li>
                                <li>
                                    <a href="typography.html">Typography</a>
                                </li>
                                <li>
                                    <a href="icons.html"> Icons</a>
                                </li>
                                <li>
                                    <a href="grid.html">Grid</a>
                                </li>
                            </ul>
                            <!-- /.nav-second-level -->
                        </li>
                        <li>
                            <a href="#"><i class="fa fa-sitemap fa-fw"></i> Multi-Level Dropdown<span class="fa arrow"></span></a>
                            <ul class="nav nav-second-level collapse">
                                <li>
                                    <a href="#">Second Level Item</a>
                                </li>
                                <li>
                                    <a href="#">Second Level Item</a>
                                </li>
                                <li>
                                    <a href="#">Third Level <span class="fa arrow"></span></a>
                                    <ul class="nav nav-third-level collapse">
                                        <li>
                                            <a href="#">Third Level Item</a>
                                        </li>
                                        <li>
                                            <a href="#">Third Level Item</a>
                                        </li>
                                        <li>
                                            <a href="#">Third Level Item</a>
                                        </li>
                                        <li>
                                            <a href="#">Third Level Item</a>
                                        </li>
                                    </ul>
                                    <!-- /.nav-third-level -->
                                </li>
                            </ul>
                            <!-- /.nav-second-level -->
                        </li>
                        <li>
                            <a href="#"><i class="fa fa-files-o fa-fw"></i> Sample Pages<span class="fa arrow"></span></a>
                            <ul class="nav nav-second-level collapse">
                                <li>
                                    <a href="blank.html">Blank Page</a>
                                </li>
                                <li>
                                    <a href="login.html">Login Page</a>
                                </li>
                            </ul>
                            <!-- /.nav-second-level -->
                        </li>
                    </ul>
                </div>
                <!-- /.sidebar-collapse -->
            </div>

Answer 2

添加位置：相对于新导航栏的样式：

<nav class="navbar navbar-default navbar-static-top navbar-fixed-top" role="navigation" style="margin-bottom: 0;position:relative">

它将返回滚动行为，据我所知，它不会影响设计。

Answer 3

请说清楚你真正想要什么......

如果你希望侧边栏是静态的，试试这个

.sidebar {
position: fixed !important;
}

让我知道你真正想要什么。

Answer 4

你必须得到这个组件：

<div class="navbar-default sidebar" role="navigation" style="left: 0px;">
...
</div>

从元素<nav class="navbar navbar-default navbar-static-top navbar-fixed-top" role="navigation" style="margin-bottom: 0">... 中取出并放入<div id="page-wrapper">... 并应用left: 0px; 作为样式（如代码示例所示）。

因为，当您将navbar-fixed-top 类应用于元素导航时，它会获得影响左侧菜单的position: absolute 属性，因此通过将其移动到主组件所在的组件中，再次提供滚动。以下是该组件的完整来源：

<div id="wrapper">

    <!-- Navigation -->
    <nav class="navbar navbar-default navbar-static-top navbar-fixed-top" role="navigation" style="margin-bottom: 0">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="index.html">SB Admin v2.0</a>
        </div>
        <!-- /.navbar-header -->

        <ul class="nav navbar-top-links navbar-right">
            <li class="dropdown">
                <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                    <i class="fa fa-envelope fa-fw"></i> <i class="fa fa-caret-down"></i>
                </a>
                <ul class="dropdown-menu dropdown-messages">
                    <li>
                        <a href="#">
                            <div>
                                <strong>John Smith</strong>
                                <span class="pull-right text-muted">
                                    <em>Yesterday</em>
                                </span>
                            </div>
                            <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <strong>John Smith</strong>
                                <span class="pull-right text-muted">
                                    <em>Yesterday</em>
                                </span>
                            </div>
                            <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <strong>John Smith</strong>
                                <span class="pull-right text-muted">
                                    <em>Yesterday</em>
                                </span>
                            </div>
                            <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a class="text-center" href="#">
                            <strong>Read All Messages</strong>
                            <i class="fa fa-angle-right"></i>
                        </a>
                    </li>
                </ul>
                <!-- /.dropdown-messages -->
            </li>
            <!-- /.dropdown -->
            <li class="dropdown">
                <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                    <i class="fa fa-tasks fa-fw"></i> <i class="fa fa-caret-down"></i>
                </a>
                <ul class="dropdown-menu dropdown-tasks">
                    <li>
                        <a href="#">
                            <div>
                                <p>
                                    <strong>Task 1</strong>
                                    <span class="pull-right text-muted">40% Complete</span>
                                </p>
                                <div class="progress progress-striped active">
                                    <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
                                        <span class="sr-only">40% Complete (success)</span>
                                    </div>
                                </div>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <p>
                                    <strong>Task 2</strong>
                                    <span class="pull-right text-muted">20% Complete</span>
                                </p>
                                <div class="progress progress-striped active">
                                    <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100" style="width: 20%">
                                        <span class="sr-only">20% Complete</span>
                                    </div>
                                </div>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <p>
                                    <strong>Task 3</strong>
                                    <span class="pull-right text-muted">60% Complete</span>
                                </p>
                                <div class="progress progress-striped active">
                                    <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%">
                                        <span class="sr-only">60% Complete (warning)</span>
                                    </div>
                                </div>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <p>
                                    <strong>Task 4</strong>
                                    <span class="pull-right text-muted">80% Complete</span>
                                </p>
                                <div class="progress progress-striped active">
                                    <div class="progress-bar progress-bar-danger" role="progressbar" aria-valuenow="80" aria-valuemin="0" aria-valuemax="100" style="width: 80%">
                                        <span class="sr-only">80% Complete (danger)</span>
                                    </div>
                                </div>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a class="text-center" href="#">
                            <strong>See All Tasks</strong>
                            <i class="fa fa-angle-right"></i>
                        </a>
                    </li>
                </ul>
                <!-- /.dropdown-tasks -->
            </li>
            <!-- /.dropdown -->
            <li class="dropdown">
                <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                    <i class="fa fa-bell fa-fw"></i> <i class="fa fa-caret-down"></i>
                </a>
                <ul class="dropdown-menu dropdown-alerts">
                    <li>
                        <a href="#">
                            <div>
                                <i class="fa fa-comment fa-fw"></i> New Comment
                                <span class="pull-right text-muted small">4 minutes ago</span>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <i class="fa fa-twitter fa-fw"></i> 3 New Followers
                                <span class="pull-right text-muted small">12 minutes ago</span>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <i class="fa fa-envelope fa-fw"></i> Message Sent
                                <span class="pull-right text-muted small">4 minutes ago</span>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <i class="fa fa-tasks fa-fw"></i> New Task
                                <span class="pull-right text-muted small">4 minutes ago</span>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a href="#">
                            <div>
                                <i class="fa fa-upload fa-fw"></i> Server Rebooted
                                <span class="pull-right text-muted small">4 minutes ago</span>
                            </div>
                        </a>
                    </li>
                    <li class="divider"></li>
                    <li>
                        <a class="text-center" href="#">
                            <strong>See All Alerts</strong>
                            <i class="fa fa-angle-right"></i>
                        </a>
                    </li>
                </ul>
                <!-- /.dropdown-alerts -->
            </li>
            <!-- /.dropdown -->
            <li class="dropdown">
                <a class="dropdown-toggle" data-toggle="dropdown" href="#">
                    <i class="fa fa-user fa-fw"></i> <i class="fa fa-caret-down"></i>
                </a>
                <ul class="dropdown-menu dropdown-user">
                    <li><a href="#"><i class="fa fa-user fa-fw"></i> User Profile</a>
                    </li>
                    <li><a href="#"><i class="fa fa-gear fa-fw"></i> Settings</a>
                    </li>
                    <li class="divider"></li>
                    <li><a href="login.html"><i class="fa fa-sign-out fa-fw"></i> Logout</a>
                    </li>
                </ul>
                <!-- /.dropdown-user -->
            </li>
            <!-- /.dropdown -->
        </ul>
        <!-- /.navbar-top-links -->


        <!-- /.navbar-static-side -->
    </nav>

    <div id="page-wrapper">
  <div class="navbar-default sidebar" role="navigation" style="
left: 0px;
">
            <div class="sidebar-nav navbar-collapse" style="
position: relative;
">
                <ul class="nav in" id="side-menu">
                    <li class="sidebar-search">
                        <div class="input-group custom-search-form">
                            <input type="text" class="form-control" placeholder="Search...">
                            <span class="input-group-btn">
                            <button class="btn btn-default" type="button">
                                <i class="fa fa-search"></i>
                            </button>
                        </span>
                        </div>
                        <!-- /input-group -->
                    </li>
                    <li>
                        <a href="index.html" class="active"><i class="fa fa-dashboard fa-fw"></i> Dashboard</a>
                    </li>
                    <li>
                        <a href="#"><i class="fa fa-bar-chart-o fa-fw"></i> Charts<span class="fa arrow"></span></a>
                        <ul class="nav nav-second-level collapse">
                            <li>
                                <a href="flot.html">Flot Charts</a>
                            </li>
                            <li>
                                <a href="morris.html">Morris.js Charts</a>
                            </li>
                        </ul>
                        <!-- /.nav-second-level -->
                    </li>
                    <li>
                        <a href="tables.html"><i class="fa fa-table fa-fw">    </i> Tables</a>
                    </li>
                    <li>
                        <a href="forms.html"><i class="fa fa-edit fa-fw"> </i> Forms</a>
                    </li>
                    <li>
                        <a href="#"><i class="fa fa-wrench fa-fw"></i> UI Elements<span class="fa arrow"></span></a>
                        <ul class="nav nav-second-level collapse">
                            <li>
                                <a href="panels-wells.html">Panels and Wells</a>
                            </li>
                            <li>
                                <a href="buttons.html">Buttons</a>
                            </li>
                            <li>
                                <a href="notifications.html">Notifications</a>
                            </li>
                            <li>
                                <a href="typography.html">Typography</a>
                            </li>
                            <li>
                                <a href="icons.html"> Icons</a>
                            </li>
                            <li>
                                <a href="grid.html">Grid</a>
                            </li>
                        </ul>
                        <!-- /.nav-second-level -->
                    </li>
                    <li>
                        <a href="#"><i class="fa fa-sitemap fa-fw"></i> Multi-Level Dropdown<span class="fa arrow"></span></a>
                        <ul class="nav nav-second-level collapse">
                            <li>
                                <a href="#">Second Level Item</a>
                            </li>
                            <li>
                                <a href="#">Second Level Item</a>
                            </li>
                            <li>
                                <a href="#">Third Level <span class="fa arrow"></span></a>
                                <ul class="nav nav-third-level collapse">
                                    <li>
                                        <a href="#">Third Level Item</a>
                                    </li>
                                    <li>
                                        <a href="#">Third Level Item</a>
                                    </li>
                                    <li>
                                        <a href="#">Third Level Item</a>
                                    </li>
                                    <li>
                                        <a href="#">Third Level Item</a>
                                    </li>
                                </ul>
                                <!-- /.nav-third-level -->
                            </li>
                        </ul>
                        <!-- /.nav-second-level -->
                    </li>
                    <li>
                        <a href="#"><i class="fa fa-files-o fa-fw"></i> Sample Pages<span class="fa arrow"></span></a>
                        <ul class="nav nav-second-level collapse">
                            <li>
                                <a href="blank.html">Blank Page</a>
                            </li>
                            <li>
                                <a href="login.html">Login Page</a>
                            </li>
                        </ul>
                        <!-- /.nav-second-level -->
                    </li>
                </ul>
            </div>
            <!-- /.sidebar-collapse -->
        </div>
//...