*{margin:0;padding:0}html,body{height:100vh;width:100vw;overflow:hidden;background-color:#fff}body{display:flex;justify-content:center;align-items:center;position:relative}.webgl{position:fixed;top:0;left:0;outline:none;opacity:1;z-index:2}#duck{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);height:auto;width:120px;z-index:4}