> We need to show dozens of things at once and this won't fit on a phone. Switch to desktop.

Scrollbars can help!

I really like the idea, although the designs are a bit limited and I don't know that I'd use this tool if I did want to make this kind of business card. But looking at the UI, this is all stuff that would be pretty easy to make responsive, and would work fairly well on mobile. It's a bit of a shame to add an arbitrary limitation like this.