Kepler with Proxima Nova in action on thesummit.co

Under the hood

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.header-2 { font-family: proxima-nova, 'Proxima Nova', sans-serif; font-size: 30px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 39px; text-transform: uppercase; color: #FFFFFF; }
.header-3 { font-family: proxima-nova, 'Proxima Nova', sans-serif; font-size: 15px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; text-transform: uppercase; color: #FFFFFF; background-color: #0090A0; }
.header-4 { font-family: proxima-nova, 'Proxima Nova', sans-serif; font-size: 15px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; text-transform: uppercase; color: #FFFFFF; background-color: #0090A0; }