Components of Elementa Fundamentalia rely on a contellation of smaller TailwindCSS plugins:

Media Responsum — provides opinionated responsive breakpoints
Pro Rata Rem – responsively sets font-size of root element
Fractio Rem – allows to use fractions of (responsive) root element for sizing
Metrica Typus – allows to set (responsive) font size in terms of capital-height and x-height
Canon Typographia – sets reasonable defaults of basic typographic style for HTML elements
Scena Visus – provides layout primitives and composition templates