Set up footer with multiple columns

This website show the footer setup with multiple columns. This article explains how this is done.

1. Create your module and publish them in the footer module position. I have used 2 custom html modules, that hold text.
2. Go to each module and set the following:
   Tab advanced:
      Module Style -> HTML5 
      Boostrap Size -> devide 12 by the number of modules, so if you have 2 set '6'
3. Header Tag, default H3

That is is you have multiple columns now in 1 module position.