Helvetica with ITC Avant Garde in action on descript.com

• .header-1 { font-family: ITCAvantGardeStd, sans-serif; font-size: 36px; font-style: normal; font-weight: 500; letter-spacing: 0px; line-height: 48px; text-transform: none; color: #222430; }
• .content-1 { font-family: Helvetica, sans-serif; font-size: 17px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 26px; text-transform: none; color: #222222; }

Helvetica is available from Fonts.com and MyFonts.