Very helpful tutorial. The best piece of information was the idea of working from the small size up, I really liked it.

My name is William. I've just started my own webcomics site. I thought it was going to be easy but for me it's been more of a challenge then I thought. I just wanted to drop you a line to thank you. I knew nothing at all before I came upon your site but know I'm doing OK not an expert by any means but your site got me up and going enough to understand what I was doing instead of just shooting in the dark. Again thank you so much for your great site.

This is not really a tutorial, it's more an overview of what responsive design is. Build a responsive website from start to finish without the use of bootstrap for a change. Just a plain css grid and start from there.