=font-default($font-size: 18px, $line-height: 24px)
  font-size: $font-size
  line-height: $line-height
  font-family: 'Roboto', sans-serif
  font-weight: 400
  +media-query(1350px)
    font-size: $font-size/1.2
    line-height: $line-height/1.1
  +media-query(800px)
    font-size: $font-size/1.4
    line-height: $line-height/1.2

=font-black($font-size: 24px, $line-height: 36px)
  +font-default($font-size, $line-height)
  font-weight: 900


=font-bold($font-size: 24px, $line-height: 36px)
  +font-default($font-size, $line-height)
  font-weight: 700

=font-light($font-size: 18px, $line-height: 24px)
  +font-default($font-size, $line-height)
  font-weight: 100


=font-special($font-size: 20px, $line-height: 20px)
  font-size: $font-size
  line-height: $line-height
  font-family: 'PT Serif', serif
  font-weight: 400
  font-style: italic

  +media-query(1350px)
    font-size: $font-size/1.2
    line-height: $line-height/1.1
  +media-query(800px)
    font-size: $font-size/1.4
    line-height: $line-height/1.2