abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>后台管理系统</title> <!-- 引入layui样式文件 --> <link rel="styleshe
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>后台管理系统</title>
<!-- 引入layui样式文件 -->
<link rel="stylesheet" type="text/css" href="layui/css/layui.css">
<!-- 引入layui基础核心库 -->
<script type="text/javascript" src="layui/layui.js"></script>
<style>
.header{width:100%;height:50px;line-height: 50px;background: #2E6DA4;color:#fff;}
.title{margin-left: 20px;font-size: 20px;}
.userinfo{float: right;margin-right: 10px;}
.userinfo a{color:#fff;}
.menu{width:200px;height:100%;background: #333744;position: absolute;}
.main{position: absolute;left:200px;right:0px;}
.layui-collapse{border:none;}
.layui-colla-item{border-top:none;}
.layui-colla-title{background: #42485b;color:#fff;}
.layui-colla-content{border-top:none;padding: 0px;}
</style>
</head>
<body>
<!-- 头部 -->
<div class="header">
<span class="title">京东商城--后台管理系统</span>
<span class="userinfo">admin 【系统管理员】<span><a href="">退出</a></span></span>
</div>
<!--左侧菜单 -->
<div class="menu">
<div class="layui-collapse">
<div class="layui-colla-item">
<h2 class="layui-colla-title">管理员管理</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
<div class="layui-colla-item">
<h2 class="layui-colla-title">权限管理</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
<div class="layui-colla-item">
<h2 class="layui-colla-title">系统设置</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
<div class="layui-colla-item">
<h2 class="layui-colla-title">商品分类</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
<div class="layui-colla-item">
<h2 class="layui-colla-title">产品管理</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
<div class="layui-colla-item">
<h2 class="layui-colla-title">幻灯片管理</h2>
<div class="layui-colla-content layui-show">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a href="javascript:;">默认展开</a>
</li>
</ul>
</div>
</div>
</div>
</div>
<!-- 主操作页面 -->
<div class="main">
<iframe src="welcome.html" frameborder="0" style="width: 100%;height: 100%" scrolling="0"></iframe>
</div>
</body>
</html>
welcome.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div style="text-align: center;color:gray;font-size: 20px;">
<h1>欢迎使用后台管理系统</h1>
</div>
</body>
</html>
Correcting teacher：韦小宝Correction time：2018-12-21 17:09:41
Teacher's summary：写的很不错哦！layui写出来的界面还是很简洁好看的！
