* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            background-color: #21abde;
        }

        .game-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background-color: #4ebcff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
        }

        .board {
            display: grid;
            grid-template-columns: repeat(3, 100px);
            grid-template-rows: repeat(3, 100px);
            gap: 5px;
        }

        .cell {
            width: 100px;
            height: 100px;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 2rem;
            background-color: #eeeeee;
            border: 1px solid #eeeeee;
            cursor: pointer;
            transition: background-color 0.2s ease;
        }

        .cell.taken {
            cursor: not-allowed;
        }

        .cell.X {
            color: #ff6347;
        }

        .cell.O {
            color: #2100c9;
        }

        .info {
            margin-bottom: 20px;
            font-size: 1.2rem;
            text-align: center;
        }

        .footer {
            position: fixed;
            bottom: 0;
            padding: 10px;
            background-color: #171717;
            color: white;
            width: 100%;
            text-align: center;
        }

        button {
            background-color: #009ac7;
            color: white;
            padding: 10px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #45a049;
        }

        @media screen and (max-width: 600px) {
            .board {
                grid-template-columns: repeat(3, 80px);
                grid-template-rows: repeat(3, 80px);
            }

            .cell {
                width: 80px;
                height: 80px;
                font-size: 1.5rem;
            }
        }