Under the hood
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.content-1 {
font-family: AvenirNextLTW01-Regular, sans-serif;
font-size: 16px;
font-style: normal;
font-weight: normal;
letter-spacing: normal;
line-height: 28px;
text-transform: none;
color: #000000;
}
Avenir Next is available from Fonts.com and MyFonts.