##Manage typographic rules

• Vertical rythm: keep line height in the rythm
• Typographic scale: coherent font-size

##Pixel in code but better in live

Keep px to communicate with “Creative people”.

All variables of config and in your code are defined px.

Use function of Sass-Tipo to convert px to other unit (rem is adviced).

##Other If you choose rem don’t forget old Internet Explorer. Use a post processor.

##Thanks Thanks to @htmlzengarden for smash a more complete project at origin of Sass‑Tipo