Examples of websites using
Helvetica
(Helvetica is a sans serif font designed by Max Miedinger, Linotype Design Studio, and released by Linotype in 1957. It is available in a wide range of styles and weights)
with
Nimbus Sans
(Nimbus Sans is a sans-serif font designed by Max Miedinger and released by URW Type Foundry in 1958. It is available in a range of styles, including various weights and matching italics)