=flex($justify: space-between, $alignItem: stretch)
  display: -ms-flexbox
  display: -webkit-flex
  display: flex

  justify-content: $justify
  align-items: $alignItem


=flex-rows
  flex-wrap: wrap
  flex-direction: row
  flex-flow: row wrap

=order($place)
  order: $place

=align-content($align)
  align-content: $align

=align-self($align)
  align-self: $align