git clone https://github.com/crucified713/Sass-Mockup.git into your local directory, and then npm install

You can either grunt or gulp

It's your choice. (However gulp watch is way faster than grunt watch, not sure why at this stage, but will find out)

1. The reason you see lots of unquote() in typography is this mockup is based on em units. So instead of calculating and listing font-size and line-height in em of each element seperately, you can just put into the initial value in px that you would probably grab from your designer colleagues.

1. Revert back line-height unit so it uses standard radio, as line height will be updated accordingly when you change diffrent font sizes to an element.