body{margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh;background-color:#222;font-family:Courier New,Courier,monospace;overflow:hidden;flex-direction:column}#game-container{box-shadow:0 0 20px #00000080;border:4px solid #444}#instructions{margin-top:10px;color:#888;text-align:center;font-size:14px}#instructions b{color:#fff}