Averta with Calibre in action on thoughtbot.com

.header-1 { font-family: averta-standard-bold, sans-serif; font-size: 48px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 48px; text-transform: none; color: #29292C; }
.header-2 { font-family: calibre-regular, sans-serif; font-size: 23.2px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 27.84px; text-transform: none; }
.content-1 { font-family: calibre-medium, sans-serif; font-size: 20px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 20px; text-transform: none; color: #FFFFFF; background-color: #DA393F; }
Averta is available from Fonts.com, Fontspring, MyFonts, The Designers Foundry and YouWorkForThem.
Found by @mikesten on 9 Nov 2018.

Liked by:
@mikesten @Joshua_D_

Averta with Calibre