<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!--
作者:2470674067@qq.com
描述:device-width 适应设备宽度
inital-scale=1 页面加载的时候缩放程度
设置了报错的话可以删掉
-->
<meta name="viewport" content="width-device-width,inital-scale=1">
<title>媒体化查询</title>
<style type="text/css">
.content {
height: 100px;
width: 1024px;
background: red;
}
@media only screen and (min-width: 100px) and (max-width: 640px) {
.content {
background: green;
}
}
</style>
</head>
<body>
<div class="content">
hello
</div>
</body>
</html>