body {
    font-family: Arial, sans-serif;
    text-align: center;
}
.tabuleiro {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 5px;
    justify-content: center;
}
.celula {
    width: 100px;
    height: 100px;
    border: 2px solid black;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
}
.celula:hover {
    background-color: #f0f0f0;
}
.vencedor {
    margin-top: 20px;
    font-size: 18px;
    font-weight: bold;
    color: green;
}