Examples of websites using
Avenir
(Avenir is a sans-serif font designed by Adrian Frutiger and Nadine Chahine, released by Linotype in 1988. It features clean and modern letterforms and is available in multiple weights and styles)
with
Baskerville
(Baskerville is a serif font designed by URW Type Foundry and released by Bitstream. The font family includes multiple styles with variations in weights and matching italics)