body{margin:0;padding:0;display:flex;overflow:hidden}html{margin:0;padding:0}#container{background-color:pink;width:100vw;height:100vh;width:100dvw;height:100dvh;display:flex;justify-content:center;align-items:center}canvas{background-color:red;height:100vh;width:100vw;height:100dvh;width:100dvw}