The Factorial Starter Kit is a Drupal theme, which aims to provide base styling for Drupal core and form elements.
Besides the twig template file, every component will later also be provided as a web component. You can therefore use all the components also in other contexts, e.g. in reactive frameworks like Vue. For that reason, the Factorial Starter Kit is also published as a node module on npm.
The designs for all components are built with Figma. This Figma file also provides Design Tokens, which are automatically imported into this project as CSS custom properties.
Every element can easily be adapted to the look and feel of a given project by overwriting global as well as component-specific CSS custom properties.