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CSS@media媒体查询,实现简单的响应式布局

2018-03-07 14:32 507 查看

页面相应式要求如下:



代码:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>响应式布局练习</title>
<style>
/*基本样式*/
body {
margin: 0;
padding: 0;
background-color: #ddd;
}
.side {
height: 300px;
background-color: #4eb3b9;
}
.main {
height: 300px;
background-color: #ff0097;
}
/*device-width: >= 1000px*/
@media screen and (min-width: 1000px) {
.parent {
width: 960px;
margin: 0 auto;
}
.side {
width: 300px;
height: 300px;
background-color: #4eb3b9;
float: left;
}
.main {
width: 650px;
height: 300px;
margin-left: 10px;
background-color: #ff0097;
float: left;
}
}
/*device-width:400px-1000px*/
@media screen and (min-width: 400px) and (max-width: 1000px) {
.parent {
display: flex;
}
.side {
width: 300px;
}
.main {
flex: 1;
margin-left: 10px;
}
}
/*device-width: <= 400px*/
@media screen and (max-width: 400px) {
.parent {
display: flex;
flex-flow: column wrap;
}
.side {
flex: 1;
margin-bottom: 10px;
}
.main {
flex: 1;
}
}
</style>
</head>
<body>
<div class="parent">
<div class="side"></div>
<div class="main"></div>
</div>
</body>
</html>
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