Examples of websites using
Lato
(Lato is a sans-serif font designed by Łukasz Dziedzic and released by tyPoland in 2010. The font family consists of two styles, regular and bold, with each style available in a wide range of weights and matching italics)
with
Karla
(Karla is a sans-serif font designed by Jonny Pinhorn. It offers multiple styles, including regular and bold weights with matching italics)