h5 宽度全屏自适应

Posted 2022-07-12 flowlight

 <style>
        html
            font-size:calc(100vw/640*100); 
        
        .main
            position: absolute;
            top: 0;
            left: 0;
            width: 6.4rem;
            height: 6.4rem;
            background:red;
        
    </style>