#board {
    display: grid;
    grid-template-columns: repeat(15, 30px);
    grid-template-rows: repeat(15, 30px);
    gap: 1px;
    background-color: #ccc;
    width: fit-content;
}

.cell {
    width: 30px;
    height: 30px;
    background-color: #fff;
    cursor: pointer;
}

.black {
    background-color: #000;
    border-radius: 50%;
}

.white {
    background-color: #fff;
    border: 1px solid #000;
    border-radius: 50%;
}