媒体查询1 

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <title></title>
        <style type="text/css">
            .main{
                width: 1200px;
                height: 600px;
                background: #ccc;
                margin:  0 auto;
            }
            .main div{
                width: 300px;
                height: 300px;
                display: inline-block;
            }
            .div1{
                background: salmon;
            }
            .div2{
                background: skyblue;
            }
            .div3{
                background: pink;
            }
            
            
            
        </style>
    </head>
    <body>
        <div class="main">
            <div class="div1"></div>
            <div class="div2"></div>
            <div class="div3"></div>
        </div>
        
    </body>
</html>

 

posted @ 2019-03-18 21:54  就这样子吧  阅读(156)  评论(0)  编辑  收藏  举报