Wow, I just love interactive blog posts like this. For grids I can really recommend just playing around with grid areas in a tool like https://grid.layoutit.com

Wow, I just love interactive blog posts like this. For grids I can really recommend just playing around with grid areas in a tool like https://grid.layoutit.com/ https://grid.layoutit.com/ I've been using the site to plan my grid layouts for a couple of years now and it just makes spacing so much easier