Curious about the design behind cancer.gov? SiteFontCheck scanned their live CSS architecture and identified 3 unique font families. The website relies heavily on <open sans, -apple-system, blinkmacsystemfont, segoe ui, roboto, helvetica, arial, sans-serif, apple color emoji, segoe ui emoji, segoe ui symbol> for its main text elements, paired with <poppins, helvetica neue, helvetica, roboto, arial, sans-serif> and <poppins, helvetica neue, helvetica, roboto, arial, sans-serif, serif> as fallback options. Below is the precise map of font sizes, weights, and text elements used across their site.