Helvetica with Helvetica Neue in action on drippop.com

Under the hood

.header-1 { font-family: Helvetica, sans-serif; font-size: 40px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 47px; text-transform: none; color: #000000; }
.header-2 { font-family: "Helvetica Neue LT Pro", sans-serif; font-size: 22px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 30px; text-transform: none; color: #000000; }
.content-1 { font-family: Helvetica, sans-serif; font-size: 16px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 20px; text-transform: none; color: #000000; }
.content-2 { font-family: "Helvetica Neue LT Pro", sans-serif; font-size: 20px; font-style: normal; font-weight: 500; letter-spacing: normal; line-height: 38px; text-transform: none; color: #000000; }