Infima CSS Framework

Infima is a UI framework by Facebook focused on content-centric websites, such as documentation or blogs. As of v0.2.0-alpha.45 (pre-1.0, alpha releases), it provides a set of CSS classes for layouts, typography, and components optimized for readability and accessibility. Key differentiators: designed specifically for content sites, built-in dark mode support, and used as the underlying CSS framework for Docusaurus. It has no JavaScript dependencies and can be used as a standalone CSS framework or integrated via PostCSS. Release cadence is irregular as it's still in alpha.