Examples of websites using
Open Sans
(Open Sans is a sans-serif font designed by Steve Matteson. It offers a wide range of styles, including regular, italic, bold, bold italic, and light)
with
FF Bau
(FF Bau is a sans-serif font designed by Christian Schwartz and released by FontFont in 2002. The font family consists of multiple styles, including regular, medium, bold, black, and their corresponding italics)