Examples of websites using
Circular
(Circular is a geometric sans-serif font designed by Laurenz Brunner and released by Lineto. The family consists of 6 weights with matching italics, totaling to 12 styles available)
with
Montserrat
(Montserrat is a sans-serif font designed by Julieta Ulanovsky, Sol Matas, Juan Pablo del Peral, and Jacques Le Bailly. It offers a total of 36 styles, including various weights and matching italics)