* {
    text-align: center;
    font-family: 'Helvetica Neue', sans-serif;
}

select {
    margin-right: 15px;
}

.row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
}

.cell {
    width: 5vw;
    height: 5vw;
    border: 1px solid black;
}

.cube {
    width: 3vw;
    height: 3vw;
    border: .5vw solid black;
    margin: .5vw;
}