index
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title>F80 layui layout </title>
<link rel="stylesheet" href="./layui-v2.6.8的副本/layui/css/layui.css">
</head>
<body>
<div class="layui-layout layui-layout-admin">
<div class="layui-header">
<div class="layui-logo layui-hide-xs layui-bg-black">霍格沃茨托管系统</div>
<!-- 头部区域(可配合layui 已有的水平导航) -->
<ul class="layui-nav layui-layout-left">
<!-- 移动端显示 -->
<li class="layui-nav-item layui-show-xs-inline-block layui-hide-sm" lay-header-event="menuLeft">
<i class="layui-icon layui-icon-spread-left"></i>
</li>
<li class="layui-nav-item layui-hide-xs"><a href="">格兰芬多</a></li>
<li class="layui-nav-item layui-hide-xs"><a href="">斯莱特林</a></li>
<li class="layui-nav-item layui-hide-xs"><a href="">赫奇帕奇</a></li>
<li class="layui-nav-item layui-hide-xs"><a href="">拉文克劳</a></li>
<li class="layui-nav-item">
<a href="javascript:;">食死徒</a>
<dl class="layui-nav-child">
<dd><a href="">秦阳</a></dd>
<dd><a href="">秦青阳</a></dd>
<dd><a href="">秦晴阳</a></dd>
</dl>
</li>
</ul>
<ul class="layui-nav layui-layout-right">
<li class="layui-nav-item layui-hide layui-show-md-inline-block">
<a href="javascript:;">
<img src="../../img/pkp_54.jpg" class="layui-nav-img">
邓布利多
</a>
<dl class="layui-nav-child">
<dd><a href="">Your Profile</a></dd>
<dd><a href="">Settings</a></dd>
<dd><a href="">Sign out</a></dd>
</dl>
</li>
<li class="layui-nav-item" lay-header-event="menuRight" lay-unselect>
<a href="javascript:;">
<i class="layui-icon layui-icon-more-vertical"></i>
</a>
</li>
</ul>
</div>
<div class="layui-side layui-bg-black">
<div class="layui-side-scroll">
<!-- 左侧导航区域(可配合layui已有的垂直导航) -->
<ul class="layui-nav layui-nav-tree" lay-filter="test" id='navTree'>
<li class="layui-nav-item layui-nav-itemed">
<a class="nav-item-title" href="javascript:;">学院</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;" data-id='student'>学生</a></dd>
<dd><a href="javascript:;" data-id='class'>班级</a></dd>
<dd><a href="javascript:;" data-id='course'>课程</a></dd>
</dl>
</li>
</ul>
</div>
</div>
<div class="layui-body">
<!-- 内容主体区域 -->
<div style="padding: 0 15px;" id='content'>
<div class="layui-tab" lay-allowClose='true' lay-filter="nav-filter" lay-id='nav-filter-id'>
<ul class="layui-tab-title"></ul>
<div class=&