*{box-sizing:border-box}body{margin:0;padding:10px;background-color:#111;display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;font-family:Arial,sans-serif;overflow:hidden}h1{color:#fff;text-align:center;margin:10px 0 20px;font-size:clamp(1.2rem,4vw,2rem);text-shadow:2px 2px 4px rgba(0,0,0,.5)}.game-container{display:flex;justify-content:center;align-items:center;width:100%;height:100%}canvas{border-radius:4px}@media (max-width: 768px){body{padding:5px}h1{margin:5px 0 10px}}@media (orientation: portrait) and (max-width: 768px){h1{font-size:1.5rem}}