Curious about the design behind cancer.org? SiteFontCheck scanned their live CSS architecture and identified 5 unique font families. The website relies heavily on <source sans pro, sans-serif> for its main text elements, paired with <poppins, sans-serif> and <source serif pro, serif> as fallback options, and 2 additional. Below is the precise map of font sizes, weights, and text elements used across their site.