媒体查询 

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>媒体查询文字大小</title>
        <style type="text/css">
            h1{
                font-size: 20px;
                text-align: center;
                line-height: 200px;
                width: 200px;
                height: 200px;
                background: red;
            }
            
            @media only screen and (min-width: 400px) and (max-width: 640px) {
                h1{
                font-size: 40px;
                text-align: center;
                line-height: 400px;
                width: 400px;
                height: 400px;
                background: pink;
            }
            }
            
            @media only screen and (min-width: 640px) and (max-width: 1000px){
                h1{
                font-size: 60px;
                text-align: center;
                line-height: 600px;
                width: 600px;
                height: 600px;
                background: yellow;
            }
            }
        </style>
    </head>
    <body>
        <h1>helloworld</h1>
    </body>
</html>

 

posted @ 2019-03-18 21:54  就这样子吧  阅读(133)  评论(0)    收藏  举报