screens.styl

min-screen(end_at)
  @media screen and (min-width: end_at)
    {block}

screen(start_at)
  @media screen and (max-width: start_at)
    {block}

screen-1280()
  +screen(1323px)
    {block}

screen-1024()
  +screen(1152px)
    {block}

screen-768()
  +screen(896px)
    {block}

screen-568()
  +screen(668px)
    {block}

screen-480()
  +screen(524px)
    {block}

screen-320()
  +screen(400px)
    {block}