Avenir with Buenos Aires in action on flocc.co

Under the hood

.header-1 { font-family: BuenosAires-SemiBold, sans-serif; font-size: 83px; font-style: normal; font-weight: 500; letter-spacing: normal; line-height: 116px; text-transform: none; color: #FFFFFF; }
.content-1 { font-family: Avenir, sans-serif; font-size: 22px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 39px; text-transform: none; color: #FFFFFF; }