.Stone {
    cursor: default; /* disable 'I beam' cursor change */
}

.Board {
    display: flex;
    flex-direction: column;
    justify-content: center; 
    align-items: center;
}

.Tile {
    border: 1px solid #e4e4e4;
    float: left;
    text-align: center;
}

.Tile.black {
    background: lightgray;
}

.Tile.white {
    background: white;
}