Coss is an accessible UI component library and design system framework used to build web interfaces. It provides a comprehensive kit of interactive elements and layout building blocks that follow screen reader and keyboard navigation standards.
The project functions as a UI overlay management library, offering specialized tools for implementing anchored popovers, tooltips, and slide-out panels with smooth transitions. It includes a set of accessible form primitives and selection controls to ensure compatibility across different assistive technologies.
Its broader capabilities cover the construction of complex forms with validation and date pickers, the design of application navigation through breadcrumbs and command palettes, and the management of system notification workflows using toasts and callouts. It also provides a variety of layout primitives including framed containers, tabbed interfaces, and tabular data displays.
