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

  

posted on 2019-08-14 11:25  FlowLight  阅读(1002)  评论(0编辑  收藏  举报