bootstrapprogram

导航 HTML：

    <nav class="navbar navbar-default navbar-fixed-top" role="navigation">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                  <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="#">HPIT学院</a>
              </div>

              <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav navbar-right">
            <li>
                <a href="#home">首页</a>
            </li>
            <li>
                <a href="#bbs">论坛</a>
            </li>
            <li>
                <a href="#web">前端开发</a>
            </li>
            <li>
                <a href="#new">最新课程</a>
            </li>
            <li>
                <a href="#app">移动APP</a>
            </li>
            <li>
                <a href="#about">联系我们</a>
            </li>
        </ul>
    </div>
    </div>
    </nav>

运行如下：

navbar-fixed-top 导航头部对其
navbar-right 悬浮在右边 container 居中块
&:focus 焦点
&:hover 鼠标悬浮