TuiCss is a CSS framework and JavaScript library that enables developers to build retro-style text-based user interfaces (TUI) for the web, mimicking the aesthetic of MS-DOS applications and Turbo Vision. It provides a comprehensive set of SCSS components including windows, panels, buttons, forms, tables, charts, modals, progress bars, and a responsive grid system, all styled with high-contrast colors and monospace fonts. The accompanying vanilla JavaScript adds interactivity for tabs, collapsible side navigation, modal dialogs, and live clock displays. The codebase is well-organized with modular SCSS files, a build pipeline using Gulp, and a clean separation of concerns. While the library has no automated tests, its examples demonstrate functional correctness, and the component structure supports straightforward reuse or theming via SCSS variables. The project is published on npm and has a small but active community with a healthy issue tracker.