body {
    background: #f5f5f5;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#game {
    text-align: center;
}

#board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    gap: 5px;
    margin: 20px auto;
}

.cell {
    width: 100px;
    height: 100px;
    background: white;
    border: 2px solid #333;
    font-size: 2.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

#status {
    font-size: 1.4rem;
    margin-top: 10px;
}

button {
    padding: 10px 20px;
    font-size: 1rem;
    margin-top: 10px;
    cursor: pointer;
}