You're refering to a lot of fonts (eg: "Avenir"), but not including any fonts yourself (eg: using something like google fonts). The fallback (sans), can look pr

You're refering to a lot of fonts (eg: "Avenir"), but not including any fonts yourself (eg: using something like google fonts). The fallback (sans), can look pretty ugly. I'd manually include fonts, rather than expect users to have they ones you want pre-installed (you'll probably never reproduce this since you most likely have them installed).