Examples of websites using
Arno
(Arno is a serif font designed by Robert Slimbach and released by Adobe in 2007. The font family includes a range of styles, with variations in weights and matching italics)
with
Roboto
(Roboto is a sans-serif font designed by Christian Robertson and published through Google. The font family consists of 12 styles, including regular, italic, bold, and bold italic variations)