<nav class="navbar navbar-default" role="navigation">
  <div class="container-fluid">
    <!-- 导航头部 -->
    <div class="navbar-header">
      <!-- 移动设备上的导航切换按钮 -->
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse-example">
        <span class="sr-only"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="/#">Simple Post</a>
    </div>
    <!-- 导航项目 -->
    <div class="collapse navbar-collapse navbar-collapse-example">
      <!-- 一般导航项目 -->
      <ul class="nav navbar-nav">
	  <li><a href="/index.php">首页</a></li>
      <li><a href="/post.php">发布文章</a></li>
	  <li>
    <a class="dropdown-toggle" data-toggle="dropdown" href="your/nice/url">更多<span class="caret"></span></a>
    <ul class="dropdown-menu">
      <li><a href="/user.php">个人中心</a></li>
      <li><a href="/exit.php">登出</a></li>
      <li><a href="/login.php">登录</a></li>
      </ul>
    </div>
  </div>
</nav>