html,body{height:100%}body{background-color:#000;color:#fff;display:block;margin:0;font-family:Arial,sans-serif;overflow:hidden}canvas{background-color:#111;border:2px solid #fff;max-width:100%;max-height:100%}#game-container{position:fixed;top:0;left:0;width:100vw;height:100vh;display:flex;align-items:center;justify-content:center}h1{position:fixed;top:8px;left:50%;transform:translate(-50%);margin:0;z-index:10}