@primer/css is a utility-first CSS library that provides a set of pre-defined classes to help you style your HTML elements. It's created and maintained by GitHub's design system team and follows the Primer design system. @primer/css offers a robust set of styling options for typography, layout, color, and more.
Alternatives: Bootstrap, Tailwind CSS, Bulma
v10.10.0(10 months ago)
@primer/css is optimized for performance and has a small footprint. It leverages atomic CSS and functional CSS principles to generate minimal and reusable styles. jss, on the other hand, adds a runtime CSS generation layer which can impact performance compared to static CSS bundling. However, depending on the use case, the performance difference may not be significant.
@primer/css provides a consistent set of utility classes and styles, making it easy to apply styles without writing custom CSS. It requires minimal configuration and is a good choice for developers who prefer a plug-and-play solution. jss, on the other hand, offers more flexibility but requires writing and managing styles programmatically. It has a bit steeper learning curve but provides greater control and customization options.
Both packages have active communities and are well-maintained. However, @primer/css benefits from being part of the GitHub ecosystem and has a larger community support due to its association with the popular Primer design system. jss also has a dedicated community and is widely used in the React community, with many plugins and integrations available.