> How arrogant of the web developer to override the user's preference! I imagine this is partly tongue-in-cheek, but I think the real difficulty here is that C

> How arrogant of the web developer to override the user's preference! I imagine this is partly tongue-in-cheek, but I think the real difficulty here is that CSS doesn't differentiate between "user-configured sans-serif font" and "the system fallback sans-serif font". As a result, you can't allow users to override your font choices without disregarding custom fonts entirely.