Curious about the design behind aon.com? SiteFontCheck scanned their live CSS architecture and identified 4 unique font families. The website relies heavily on <helvetica now text, sans-serif> for its main text elements, paired with <helvetica now display, sans-serif> and <arial, helvetica, sans-serif> as fallback options, and 1 additional. Below is the precise map of font sizes, weights, and text elements used across their site.