With the chaos of different screen sizes and a new generation of web browsers, the design paradigms of layout and typography have shifted away from static layouts and system fonts to dynamic layouts and custom web fonts. But screens have not just changed in size but also in pixel density. In other words: maybe we do not just need responsive layouts, we might also need responsive typefaces. iA started experimenting with reponsive typefaces in 2012. A short rundown of what we have learned since then.