twitter-bootstrap-3 - 在 Bootstrap 3 中折叠导航栏？

Question

我有一个标题部分，里面有一个导航，因为标题类有一个在 css 中设置的图像背景图像，看起来令人印象深刻。问题是导航折叠会扩展标题并将也位于标题部分内的非导航内容向下推。有没有办法在折叠而不是将内容向下推到页面并扩展我的标题区域时使折叠菜单显示在其父 div 上方？

请你能告诉我如何将导航栏折叠到所有其他内容上吗？

Answer 1

下面是一个示例，展示了如何拥有您可能想要的任何类型的“vanilla bootstrap”NAVBAR 配置。它包括一个站点标题、左对齐或右对齐的折叠和非折叠菜单项，以及静态文本。请务必阅读评论以更全面地了解您可以更改的内容。享受！

小提琴：http: //jsfiddle.net/nomis/n9KtL/1/

<nav role="navigation" class="navbar navbar-default navbar-fixed-top">
  <div class="container">

    <!-- Title -->
    <div class="navbar-header pull-left">
      <a href="/" class="navbar-brand">GNOMIS</a>
    </div>

    <!-- 'Sticky' (non-collapsing) right-side menu item(s) -->
    <div class="navbar-header pull-right">
      <ul class="nav pull-left">
        <!-- This works well for static text, like a username -->
        <li class="navbar-text pull-left">User Name</li>
        <!-- Add any additional bootstrap header items.  This is a drop-down from an icon -->
        <li class="dropdown pull-right">
          <a href="#" data-toggle="dropdown" style="color:#777; margin-top: 5px;" class="dropdown-toggle"><span class="glyphicon glyphicon-user"></span><b class="caret"></b></a>
          <ul class="dropdown-menu">
            <li>
              <a href="/users/id" title="Profile">Profile</a>
            </li>
            <li>
              <a href="/logout" title="Logout">Logout </a>
            </li>
          </ul>
        </li>
      </ul>

      <!-- Required bootstrap placeholder for the collapsed menu -->
      <button type="button" data-toggle="collapse" data-target=".navbar-collapse" class="navbar-toggle"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button>
    </div>

    <!-- The Collapsing items            navbar-left or navbar-right -->
    <div class="collapse navbar-collapse navbar-left">
      <!--                      pull-right keeps the drop-down in line -->
      <ul class="nav navbar-nav pull-right">
        <li><a href="/news">News</a></li>
        <li><a href="/Shop">Shop</a></li>
      </ul>
    </div>

    <!-- Additional navbar items -->
    <div class="collapse navbar-collapse navbar-right">
      <!--                      pull-right keeps the drop-down in line -->
      <ul class="nav navbar-nav pull-right">
        <li><a href="/locator">Locator</a></li>
        <li><a href="/extras">Extras</a></li>
      </ul>
    </div>
  </div>
</nav>