.FlexBox {
    display: flex;
}

.FlexBox_Center_XY {
    align-items: center;
    justify-content: center;
}

.FlexBox_Start {
    align-items: center;
    justify-content: start;
}

.FlexBox_End {
    align-items: center;
    justify-content: end;
}

.FlexBox_Center_Y {
    justify-content: center;
}

.FlexBox_Center_X {
    align-items: center;
}

.FlexBox_VerticalDirection {
    flex-direction: column;
}

.FlexBox_HorizontalDirection {
    flex-direction: row;
}

.b-sp-0 { /* bottom space */
    margin-bottom: 5px;
}
.b-sp-1 {
    margin-bottom: 10px;
}