> Actually, I generally would usually avoid CSS entirely, since the user's styles are generally more suitable.

I very much doubt that's true for the average user, who will simply be using the browser's built-in default – which to an not inconsiderable extent is rather constrained by backwards compatibility concerns rather than being truly optimised for usage as "the only stylesheet you'll ever need".

Besides, even with a boring plain old homepage-and-definitively-not-a-web-app it's not too difficult to run into the limitations of what you can achieve without some custom styling even purely in terms of basic layouting and typography.