Examples of websites using
Roboto
(Roboto is a sans-serif font designed by Christian Robertson and published through Google. The font family consists of 12 styles, including regular, italic, bold, and bold italic variations)
with
Stratos
(designed by Emmanuel Labard, Yoann Minet, Ilya Ruderman, Irene Vlachou and Yury Ostromentsky and released by Production Type in 2016)