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