Examples of websites using
Cambria
(Cambria is a serif font designed by Jelle Bosma, Robin Nicholas, Steve Matteson, and released by Microsoft Corporation in 2004. It is available in regular, italic, bold, and bold italic styles)
with
Karla
(Karla is a sans-serif font designed by Jonny Pinhorn. It offers multiple styles, including regular and bold weights with matching italics)