Examples of websites using
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)
with
Formular
(Formular is a sans-serif font designed by Gayaneh Bagdasaryan and Vyacheslav Kirilenko and released by Brownfox in 2014. The family is available in four weights with matching italics)