Montserrat with Open Sans in action on denote.io

Under the hood

.header-1 { font-family: Montserrat, sans-serif; font-size: 26px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 35px; text-transform: uppercase; color: #5C5C5C; }
.content-1 { font-family: 'Open Sans', Helvetica, Arial, sans-serif; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 24px; text-transform: none; color: #34495E; }