I just tried it out and it looks great. I’ll keep using it and see what I can make my own!
I have been tinkering with minimalist CSS files, some of which are classless, and can be pointed to and end up with a fairly pretty and simple interface. I like that Write.as has a fairly limited constraints to it - of course, it doesn’t mean that things shouldn’t be adjustable. Anyway, try some of these if you are curious: