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
GT America Mono
(GT America Mono is a monospace font designed by Noël Leu, Seb McLauchlan and released by Grilli Type in 2016. The font has a range of styles available, offering versatility in design)