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<!DOCTYPE html><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"> <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags --> <title>Bootstrap 101 Template</title> <!-- Bootstrap --> <link href="css/bootstrap.min.css" rel="stylesheet"> <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries --> <!-- WARNING: Respond.js doesn't work if you view the page via file:// --> <!--[if lt IE 9]> <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script> <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]--> <style type="text/css"> @media only screen and (min-width: 100px) and (max-width: 400px) { #test{ height:100px; width:100px; background: red; } } @media only screen and (min-width: 400px) and (max-width: 600px) { #test{ height:300px; width:300px; background:green; } } @media only screen and (min-width: 600px) and (max-width: 800px) { #test{ height:600px; width:600px; background: yellow; } } </style> </head> <body> <h1>Hello, world!</h1> <div id="test">测试内容</div> <!-- jQuery (necessary for Bootstrap's JavaScript plugins) --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> <!-- Include all compiled plugins (below), or include individual files as needed --> <script src="js/bootstrap.min.js"></script> </body></html>页面显示截图：
符合条件一的时候显示的效果：
2：符合条件二的时候显示的效果：