Examples of websites using
Proxima Nova
(Proxima Nova is a sans-serif font designed by Mark Simonson Studio. It has a balanced and modern design, with a total of 120 individual styles including 12 weights and matching italics to suit various design needs)
with
Aperçu
(Aperçu is a sans-serif font designed by Colophon Foundry and released by Commercial Type. The family is available in multiple weights and styles, including regular, condensed, and extended widths, with matching italics)