Oswald with Roboto in action on conference.awwwards.com

Under the hood

.header-1 { font-family: Oswald, sans-serif; font-size: 90px; font-style: normal; font-weight: 700; letter-spacing: 5px; line-height: 108px; text-transform: none; color: #FF6369; }
.header-2 { font-family: roboto, sans-serif; font-size: 16px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 24px; text-transform: none; color: #FF6369; }
.header-3 { font-family: robto, sans-serif; font-size: 28px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 42px; text-transform: none; color: #428CE1; }