*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#0a0a14;display:flex;align-items:center;justify-content:center}#game-container{width:100%;height:100%}#game-container canvas{display:block;margin:auto}#rotate-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;background:#0a0a14;align-items:center;justify-content:center}#rotate-message{text-align:center;color:#8ac;font-family:monospace;font-size:18px;line-height:2}@media(orientation:portrait)and (max-width:900px){#rotate-overlay{display:flex}#game-container{display:none}}