*{margin:0;padding:0;box-sizing:border-box}body{background-color:#f0f0f0;font-family:Arial,sans-serif;display:flex;justify-content:center;align-items:center;height:100vh}.container{display:flex;gap:20px;background-color:#fff;padding:20px;border-radius:10px;box-shadow:0 0 10px #0000001a}.game-info{width:200px}h1{text-align:center;margin-bottom:20px;color:#333}.score-container{margin-bottom:20px}.score-container p{margin-bottom:10px;font-size:18px}.next-piece-container{margin-bottom:20px}.next-piece-container p{margin-bottom:10px;font-size:16px}.controls{margin-bottom:20px}.controls p{margin-bottom:10px;font-size:16px}.controls ul{list-style-type:none;padding-left:10px}.controls li{margin-bottom:5px;font-size:14px}#tetris{border:2px solid #333;background-color:#111}#next-piece{border:1px solid #333;background-color:#111}#start-button{width:100%;padding:10px;background-color:#4caf50;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:16px;transition:background-color .3s}#start-button:hover{background-color:#45a049}