根据不同的屏幕宽度引入不同的css文件
2023-06-15阅读：2491
<link rel="stylesheet" media="screen and (min-width:800px) and (max-device-width:1200px)" href="css/c1.css"/>
<link rel="stylesheet" media="screen and (max-width:800px)" href="css/c2.css"/>
2023-06-15阅读：2491
<link rel="stylesheet" media="screen and (min-width:800px) and (max-device-width:1200px)" href="css/c1.css"/>
<link rel="stylesheet" media="screen and (max-width:800px)" href="css/c2.css"/>