Helvetica with Space Mono in action on thinkeconomia.com

Under the hood

.header-1 { font-family: Helvetica, "Helvetica Neue", arial, sans-serif; font-size: 35px; font-style: normal; font-weight: 400; letter-spacing: 0px; line-height: 42px; text-transform: none; color: #000000; }
.content-1 { font-family: "Space Mono", monospace; font-size: 22px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 29px; text-transform: none; color: #000000; }
.content-2 { font-family: "Space Mono", monospace; font-size: 22px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 29px; text-transform: uppercase; color: #000000; }