响应式网页案例

响应式案例是根据屏幕的大小出现相应的页面布局
全屏时候的页面效果如下:
在这里插入图片描述

缩小屏幕时候的页面效果

代码附上


<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<link rel="stylesheet" type="text/css" href="css/reset.css"/>
		<link rel="stylesheet" type="text/css" href="css/index.css"/>
	</head>
	<body>
		<header>
			<div class="top">
				<nav>
					<img src="images/logo.png" title="" />
				</nav>
				<ul>
					<li><a href="">首页</a></li>
					<li><a href="">宝宝</a></li>
					<li><a href="">首页</a></li>
					<li><a href="">姐姐</a></li>
					<li><a href="">首页</a></li>
					<li><a href="">首页</a></li>
				</ul>
				<div class="menu">
					<a href="#">menu</a>
				</div>
				<div class="login">
					<a href="#">登录</a>
				</div>
			</div>
		</header>
		
		<div class="main">
			<nav>
				<a href="#"><img src="images/ss.jpg" title="" alt=""/></a>
			</nav>
			<nav>
				<a href="#"><img src="images/1.png"/></a>
				<a href="#"><img src="images/2.png"/></a>
			</nav>		
		</div>
		<section>
			<ul>
				<li><a href="#"><img src="images/1.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/2.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/3.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/4.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/5.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/6.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/4.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/1.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/3.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/6.jpg" title="" /></a></li>
				<li><a href="#"><img src="images/2.jpg" title="" /></a></li>
			</ul>
		</section>
		
	</body>
</html>

css代码附上:

在这里插入代码片header{
	height: 250px;
	width: 100%;
	background: url(../images/top-bg.png) no-repeat center;
	background-size:cover;
}

.top{
	height: 50px;
	background: rgba(0,0,0,0.5);
	display: flex;
}
.top a{
	color: #fff; font-size: 16px;
}
.top nav, .top ul, .top .login{
	flex: 1;
}
.top nav{
	height: 50px;
}

.top nav img{
	height: 100%;
}
.top ul{
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.top .login{
	display:flex;
	justify-content: flex-end;
	align-items: center;
}
.top .login a{
	padding-right: 10px;
}

.top .menu{
	align-self: center;
	display: none;
	flex: 1;
}
.main{
	display: flex;
}
.main nav{
	display: flex;
	padding: 10px;
}
.main nav:nth-child(2) div:nth-child(2){
	padding-left: 10px;
}

.main nav img{
	width: 100%;
}

section ul{
	display: flex;
	flex-wrap: wrap;
	justify-content: space-around;
}
section ul li{
	width: 23%;
	margin-bottom: 10px;
	border: 1px solid #ccc;
	box-shadow: 0 0 6px #333;	
	
}
section ul li img{
	display: block;
	width: 100%;

		
}

@media only screen and (min-width:320px) and (max-width:720px) {
	.top ul{
		display: none;
	}
	.top .menu{
		display: block;
		order: -1;
	}
	.main{
		flex-wrap: wrap;
	}
	section ul li{
		width: 45%;
	}
}

关键代码附上:

@media only screen and (min-width:320px) and (max-width:720px) {
	.top ul{
		display: none;
	}
	.top .menu{
		display: block;
		order: -1;
	}
	.main{
		flex-wrap: wrap;
	}
	section ul li{
		width: 45%;
	}
}

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