%p.ligatures liftoff
%p.no-ligatures liftoff

@import url('https://fonts.googleapis.com/css?family=Source+Sans+Pro:300')

html
  font-family: 'Source Sans Pro', 'Open Sans', 'Helvetica Neue', 'Helvetica', sans-serif
  // font-kerning: none
  font-size: 40px
  font-weight: 300
  line-height: 1
  padding: 40px 40px 0
  
p
  margin: 0 0 20px
  letter-spacing: 0.375em

.ligatures
  font-feature-settings: 'liga'
  font-variant-ligatures: common-ligatures
  font-kerning: normal

.no-ligatures
  font-variant-ligatures: no-common-ligatures