CSS样式代码
css">/* 后台管理系统样式文件 */
#container{
width:100%;
height:100%;
/* background-color:antiquewhite;*/
display:flex;}
/* 左侧导航区域:宽度300px*/
.left{
width:300px;
height: 100%;
background-color:#203453;
display:flex;
flex-direction:column;
justify-content:space-between;}
.left > div:nth-of-type(1){
display:flex;
flex-direction:column;
align-items:center;
gap: 30px;}
.left .logo{
width: 100%;
height:50px;
background-color:white;
display: flex;
flex-direction:row;
justify-content:center;
align-items:center;
gap:10px;}
.logo img{
width:55px;
height:35px;
}
.logo span{
font-size: 20px;
font-weight: 600;
letter-spacing: 3px;
/* 字母间距：3px；*/
}
.left .header-img{
width: 100%;
color: white;
display: flex;
flex-direction: column;
gap:10px;
justify-content: center;
align-items: center;
}
.header-img img{
width:100px;
height: 100px;
border-radius:50%;
}
.left .nav{
width: 100%;
list-style:none;
}
.nav div:nth-of-type(1),
.nav div:nth-of-type(2),
.nav div:nth-of-type(3),
.nav div:nth-of-type(4),
.nav div:nth-of-type(5),
.nav div:nth-of-type(6){
display: flex;
/* 样式修改主轴方向 */
flex-direction:row;
justify-items: center;
align-items:center;}
.nav div,
.exit{
width:100%;
height:50px;
font-size:18px;
color:white;
/* 鼠标显示手型 */
cursor:pointer;
/* 文本居中 */
line-height: 50px;
text-align: center;
}
.nav div:hover,
.exit:hover{
background-color:white;
color:#203453;
font-weight:600px;
}
.left .exit{
height:50px;
width:100%;
}
/* 右侧内容区域：宽度-弹性盒子剩余所有宽度(flex:1)-------------------------- */
.right{
height:100%;
flex: 1;
background-color:#fff;
display:flex;
flex-direction: column;
}
.right .header,
.right .footer{
height:50px;
color:#333;
background-color: #fff;
}
.right .header{
border-bottom:solid 1px #ccc;
display:flex;
justify-content: space-between;
align-items: center;
padding-left:20px;
padding-right:20px;
}
.header span:nth-of-type(1){
display: inline-block;
width: 100px;
height:30px;
background-color:#eee;
border-radius:8px;
line-height: 30px;
text-align:center;
font-size:14px;
cursor: pointer;
}
.header span:nth-of-type(2){
font-size:20px;
font-weight:600;
}
.right .footer{
border-top: solid 1px #ccc;
font-size:12px;
color:#aaa;
line-height: 50px;
text-align:center;
}
.main{
flex:1;
padding:10px;
}
.main .content{
background-color:aliceblue;
height:100%;
width:100%;
border-radius:10px;
padding:10px;
}html代码
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>后台管理系统首页</title>
<!-- 引入外部css样式文件 -->
<link rel="stylesheet" href="./CSS/style.css">
<link rel="stylesheet" href="./CSS/xitong.css">
</head>
<body>
<!-- 包含所有内容的容器 -->
<div id="container">
<!-- 左侧内容区域 -->
<div class="left">
<!-- 上侧内容 -->
<div>
<!-- logo -->
<div class="logo">
<img src="./images/logo.png" >
<span>OPENLAB管理系统</span>
</div>
<!-- 头像 -->
<div class="header-img">
<img src="./images/qingque.jpg">
<h2>管理员：DUSTCELL</h2>
</div>
<!-- 导航 -->
<div class="nav">
<div><img src="./images/shouye.png" height="30px" width="30px">首页</div>
<div><img src="./images/shezhi.png" height="30px" width="30px">系统设置</div>
<div><img src="./images/guanliyuan_jiaoseguanli.png" height="30px" width="30px">用户管理</div>
<div><img src="./images/guanli.png" height="30px" width="30px">店铺管理</div>
<div><img src="./images/guanli_1.png" height="30px" width="30px">订单管理</div>
<div><img src="./images/houtaiguanli-jifenguanli.png" height="30px" width="30px">积分管理</div>
</div>
<!--
img : 图片标签名称，主要网页中显示图片
src属性：显示图片的路径（网址、本地路径、图片数据）
width属性：设置图片宽度，一般推荐以像素为单位
height属性：设置图片高度，一般推荐以像素为放；两个属性都设置-图片拉伸
alt属性：当图片无法正常显示时替代的文字描述
-->
</div>
<!-- 下侧内容：安全退出 -->
<div class="exit">
<span>安全退出</span>
</div>
</div>
<!-- 右侧内容区域 -->
<div class="right">
<!-- 页头 -->
<div class="header">
<span>收起菜单</span>
<span>OPENLAB管理系统</span>
<span>管理员：曼妮</span>
</div>
<!-- 内容 -->
<div class="main">
<div class="content">
<!-- 内容部分 -->
</div>
</div>
<!-- 页脚 -->
<div class="footer">
<span>版权所有，翻版必究</span>
</div>
</div>
</div>
</body>
</html>效果展示
