Open Sans with Roboto in action on grobo.io

• .header-1 { font-family: "Open Sans", sans-serif; font-size: 36px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 46px; text-transform: none; color: #000000; }
• .content-1 { font-family: Roboto, sans-serif; font-size: 16px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 26px; text-transform: none; color: #797676; }

Open Sans is available from Adobe Fonts, Font Squirrel, Google Web Fonts, MyFonts and Typekit.

Roboto is available from Adobe Fonts, Font Squirrel, Google Web Fonts and Typekit.