trycss3_media_queries1 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style>
body {
    background-color: pink;
}
@media screen and (min-width: 480px) {
    body {
        background-color: lightgreen;
    }
}
</style>
</head>
<body>
<h1>重置浏览器窗口查看效果！</h1>
<p>如果媒体类型屏幕的可视窗口宽度小于 480 px ，背景颜色将改变。</p>
</body>
</html>
 
 
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运行结果
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