.box {
    display: flex;
}

.box-lr {
    flex-direction: row;
}

.box-tb {
    flex-direction: column;
}

.box-align-center {
    align-items: center;
    background-color: #fff;
}

.box-align-end {
    align-items: flex-end;
}

.box-align-start {
    align-items: flex-start;
}

.box-pack-center {
    justify-content: center;
}

.box-pack-start {
    justify-content: flex-start;
}

.box-pack-around {
    justify-content: space-around;
}

.box-pack-between {
    justify-content: space-between;
}

.box-pack-end {
    justify-content: flex-end;
}

.box-flex-wrap {
    flex-wrap: wrap;
}

.box-align-between {
    align-content: space-between;
}