我无法让 Bootstrap 移动崩溃工作 [重复]

Question

我是引导程序和使用导航栏的新手。我想要左、右中间的徽标。我试过下面的代码，但它不起作用，有什么建议吗？

    <nav class="navbar navbar-inverse navbar-static-top">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>    
        </div>
        <a class="navbar-brand" href="#">Brand</a>
        <div id="navbar" class="navbar-collapse collapse">
          <ul class="nav navbar-nav navbar-left">
              <li><a href="#">Left</a></li>
              <li><a href="#about">Left</a></li>
          </ul>
          <ul class="nav navbar-nav navbar-right">
            <li><a href="#about">Right</a></li>
            <li><a href="#contact">Right</a></li>
          </ul>
        </div>
   </nav>

Answer 1

我重新创建了一个导航栏，供您在中心使用品牌徽标。

<nav class="navbar navbar-default" role="navigation">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse-1">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>

    </div>
    <a class="navbar-brand" href="#">Brand</a>
    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="navbar-collapse-1">

      <ul class="nav navbar-nav navbar-left">
        <li><a href="#">Menu</a></li>
        <li><a href="#">Menu</a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>
      </ul>
    </div><!-- /.navbar-collapse -->
</nav>

CSS：

.navbar-brand
{
    position: absolute;
    width: 100%;
    left: 0;
    top: 0;
    text-align: center;
    margin: auto;
}

CODEPEN DEMO