Examples of websites using
Aktiv Grotesk
(Aktiv Grotesk is a sans-serif font designed by Bruno Maag and published by Dalton Maag. It is available in a range of styles, including regular, condensed, and extended widths, with multiple weights and matching italics)
with
Caslon
(Caslon is a serif font designed by Dave Farey and William Caslon and released by ITC in 1725. The font family consists of multiple styles in various weights and matching italics)