今天对系统前端的导航栏进行了引入，选择的是layui进行了引用
代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Layui</title>
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" href="//res.layui.com/layui/dist/css/layui.css" media="all">
<!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
</head>
<body>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
<legend>水平导航菜单</legend>
</fieldset>
<ul class="layui-nav">
<li class="layui-nav-item"><a href="">最新活动</a></li>
<li class="layui-nav-item layui-this">
<a href="javascript:;">产品</a>
<dl class="layui-nav-child">
<dd><a href="">选项1</a></dd>
<dd><a href="">选项2</a></dd>
<dd><a href="">选项3</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">大数据</a></li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd class="layui-this"><a href="">选中项</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
<legend>导航带徽章和图片</legend>
</fieldset>
<ul class="layui-nav">
<li class="layui-nav-item">
<a href="">控制台<span class="layui-badge">9</span></a>
</li>
<li class="layui-nav-item">
<a href="">个人中心<span class="layui-badge-dot"></span></a>
</li>
<li class="layui-nav-item" lay-unselect="">
<a href="javascript:;"><img src="//t.cn/RCzsdCq" class="layui-nav-img">我</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">修改信息</a></dd>
<dd><a href="javascript:;">安全管理</a></dd>
<dd><a href="javascript:;">退了</a></dd>
</dl>
</li>
</ul>
<div style="margin-top: 15px;">
<!-- 示例-970 -->
<ins class="adsbygoogle" style="display:inline-block;970px;height:90px" data-ad-client="ca-pub-6111334333458862" data-ad-slot="3820120620"></ins>
</div>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
<legend>更多导航主题</legend>
</fieldset>
<ul class="layui-nav layui-bg-cyan">
<li class="layui-nav-item"><a href="">藏青导航</a></li>
<li class="layui-nav-item layui-this"><a href="">产品</a></li>
<li class="layui-nav-item"><a href="">大数据</a></li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<br>
<ul class="layui-nav layui-bg-green">
<li class="layui-nav-item"><a href="">墨绿导航</a></li>
<li class="layui-nav-item layui-this"><a href="">产品</a></li>
<li class="layui-nav-item"><a href="">大数据</a></li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<br>
<ul class="layui-nav layui-bg-blue">
<li class="layui-nav-item"><a href="">艳蓝导航</a></li>
<li class="layui-nav-item layui-this"><a href="">产品</a></li>
<li class="layui-nav-item"><a href="">大数据</a></li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
<legend>垂直导航菜单</legend>
</fieldset>
<ul class="layui-nav layui-nav-tree layui-inline" lay-filter="demo" style="margin-right: 10px;">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">选项一</a></dd>
<dd><a href="javascript:;">选项二</a></dd>
<dd><a href="javascript:;">选项三</a></dd>
<dd><a href="">跳转项</a></dd>
</dl>
</li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">云市场</a></li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<ul class="layui-nav layui-nav-tree layui-bg-cyan layui-inline" lay-filter="demo">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">选项一</a></dd>
<dd><a href="javascript:;">选项二</a></dd>
<dd><a href="javascript:;">选项三</a></dd>
<dd><a href="">跳转项</a></dd>
</dl>
</li>
<li class="layui-nav-item">
<a href="javascript:;">解决方案</a>
<dl class="layui-nav-child">
<dd><a href="">移动模块</a></dd>
<dd><a href="">后台模版</a></dd>
<dd><a href="">电商平台</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">云市场</a></li>
<li class="layui-nav-item"><a href="">社区</a></li>
</ul>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 50px;">
<legend>侧边固定导航菜单</legend>
</fieldset>
效果：
