菜单栏代码如下： 

<nav class="navbar navbar-inverse navbar-fixed-top">
    <div class="container">
        <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="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="/index.html">优美诗词网</a>
        </div>
        <div id="navbar" class="collapse navbar-collapse">
            <ul class="nav navbar-nav">
                <li class="active"><a href="/index.html">首页</a></li>
                <li><a href="/author.html">作者</a></li>
                <li><a href="/tag.html">标签</a></li>
            </ul>
        </div>
    </div>
</nav>

使用模板 

<?php include("template/menu.html"); ?>