*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;margin:0;padding:0}body{background-color:#000;color:#fff;font-family:Arial,sans-serif;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none;display:flex;align-items:center;justify-content:center}#game-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center;position:relative}canvas{background-color:#111;border:2px solid #fff;display:block;touch-action:none;max-width:100%;max-height:100%;margin:auto}h1{position:fixed;top:8px;left:50%;transform:translate(-50%);margin:0;z-index:10}