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<html lang="en">
<head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> #div0 { width: 100px; height: 200px; }
/* 根据不同的尺寸应用不同的效果 */ /* screen 是指屏幕， min-device-width 为屏幕最小尺寸，max-device-width 为屏幕最大尺寸 */ @media screen and (min-device-width: 200px) and (max-device-width: 300px) { #div0 { background-color: aqua; } }
@media screen and (min-device-width: 301px) and (max-device-width: 2000px) { #div0 { background-color: red; } } </style></head>
<body> <div id="div0"></div></body>
</html>
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