Curious about the design behind atom.io? SiteFontCheck scanned their live CSS architecture and identified 4 unique font families. The website relies heavily on <mona sans, mona sans fallback, -apple-system, blinkmacsystemfont, segoe ui, helvetica, arial, sans-serif, apple color emoji, segoe ui emoji, segoe ui symbol> for its main text elements, paired with <mona sans, mona sans header fallback, -apple-system, blinkmacsystemfont, segoe ui, helvetica, arial, sans-serif, apple color emoji, segoe ui emoji, segoe ui symbol> and <ui-monospace, sfmono-regular, sf mono, menlo, consolas, liberation mono, monospace> as fallback options, and 1 additional. Below is the precise map of font sizes, weights, and text elements used across their site.