小编man*_*man的帖子

如何更改移动设备未固定的标题,但固定为md和lg屏幕大小？

例如,您可以将nav类更改为;

移动: <nav class="navbar navbar-default" role="navigation">

桌面: <nav class="navbar navbar-default navbar-fixed-top" role="navigation">

??

<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-brand-centered">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <div class="navbar-brand navbar-brand-centered">Brand</div>
    </div>
    <div class="collapse navbar-collapse" id="navbar-brand-centered">
      <ul class="nav navbar-nav">
        <li><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>           
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>