.root
  flex-direction row
  &.reverse
    flex-direction row-reverse
  &.wrap
    flex-wrap wrap
  &.center
    justify-content center
  &.right
    justify-content flex-end
  &.between
    justify-content space-between
  &.around
    justify-content space-around
  &.v_start
    align-items flex-start
  &.v_center
    align-items center
  &.v_end
    align-items flex-end