:root{color:#f1f5f9;background:#101820;font-family:Arial,sans-serif}*{box-sizing:border-box}html,body,#game{width:100%;height:100%;margin:0}body{overflow:hidden}#game{justify-content:center;align-items:center;display:flex}canvas{max-width:100%;max-height:100%;display:block}