*{margin:0;padding:0;box-sizing:border-box}html,body{margin:0;padding:0;overflow:hidden;width:100%;height:100%;position:relative;background:#000}#app{position:fixed;top:0;left:0;width:100%;height:100%;margin:0;padding:0;overflow:hidden;background:#000}canvas{display:block;touch-action:none;margin:0;padding:0;z-index:1;background:transparent;width:100%;height:100%;object-fit:fill}