Maison Neue with Maison Neue Extended in action on givekudos.strava.com

Under the hood

.header-1 { font-family: MaisonNeueBook, Helvetica, Arial; font-size: 16px; font-style: normal; font-weight: 400; letter-spacing: 0px; line-height: 26px; text-transform: none; color: #4C4C4C; }
.header-2 { font-family: MaisonNeueLight, Helvetica, Arial; font-size: 46px; font-style: normal; font-weight: 100; letter-spacing: 0px; line-height: 56px; text-transform: none; color: #353633; }
.header-3 { font-family: MaisonNeueExtendedBold, Helvetica, Arial; font-size: 46px; font-style: normal; font-weight: 100; letter-spacing: 0px; line-height: 56px; text-transform: none; color: #FFFFFF; background-color: #000000; }