#board {
    width: 400px;
    height: 400px;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    border: 2px solid #333;
}

.square {
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 36px;
}

.white {
    background-color: #f0d9b5;
}

.black {
    background-color: #b58863;
}

.piece {
    cursor: pointer;
}