*{margin:0;padding:0;-webkit-box-sizing:border-box;box-sizing:border-box;background-repeat:no-repeat;background-size:100%;-webkit-overflow-scrolling:touch}html{font-size:100px}#app,body,html{width:100%;height:100%;overflow:hidden}button{border:none;outline:none;background:transparent;cursor:pointer}img{display:block}