body {
    margin: 0;
    padding: 0;
    background-color: #000;
    width: 616px;
    height: 616px;
    justify-content: center;
    align-items: center;
}

#container {
    width: 616px;
    height: 616px;
    display: grid;
    grid-template-columns: repeat(8, 1fr); /* Imposta una griglia di 8 colonne */
    grid-template-rows: repeat(8, 1fr);    /* Imposta una griglia di 8 righe */
}

.square {
    width: 616px;
    height: 616px;
    background: #000;
    border: 1px solid #fff;
    text-align: center;
    cursor: pointer;
}