Awesome GitHub RepositoriesGeneral Purpose Frameworks

Bootstrap is a comprehensive, mobile-first CSS framework designed for building responsive web interfaces. It provides a standardized library of reusable UI components, such as navigation bars, modals, and forms, alongside a robust grid system that ensures consistent layout alignment across diverse viewport sizes. By establishing a baseline through browser normalization and standardized typography, the project enables developers to create accessible, cross-browser compatible web applications. The framework distinguishes itself through a modular Sass-based architecture that allows for deep cust

Bulma is a design-agnostic CSS framework that provides a collection of pre-styled interface components and layout primitives. It is built to be independent of specific JavaScript frameworks or build tools, allowing developers to construct responsive web interfaces by applying standardized classes directly to semantic HTML markup. The framework distinguishes itself through a utility-first approach that combines modular component styling with a flexible grid system. It leverages native CSS variables to manage design tokens, enabling real-time visual customization, automatic dark mode adaptation

Foundation Sites is a responsive front-end framework providing a collection of CSS and JavaScript tools to build websites that automatically adapt to different screen sizes and devices. It functions as a responsive design library and cross-browser UI toolkit, offering a grid layout system and pre-styled interface components to ensure consistent rendering across modern web browsers. The framework enables rapid front-end UI prototyping and the integration of interactive components through a scripting interface that manages the lifecycle of UI plugins. It supports custom CSS framework management

UIkit is a CSS front-end framework and accessible UI component library designed for building responsive web interfaces. It provides a comprehensive set of styling classes and modular components alongside a JavaScript interaction toolkit for managing behavioral elements. The framework includes native support for internationalized web interfaces, featuring multi-locale text translation and right-to-left layout directions. It employs a responsive layout engine that uses flexible grids, adaptive breakpoints, and container widths to align content across different screen sizes. The toolkit covers

This project is a CSS design system framework and modular library providing a standardized set of UI component stylesheets. It establishes a unified system of visual guidelines to ensure a consistent and professional look and feel across web interfaces. The framework is organized as a collection of standalone stylesheets that can be imported individually to minimize bundle size and eliminate unused styles. It utilizes a design token system based on CSS variables to manage theming and a utility-first class system for layout and spacing. The system employs a block element modifier naming conve

Carbon is an enterprise design system that provides a comprehensive collection of reusable UI components, design tokens, and guidelines for building professional web applications. It functions as a CSS framework that enforces a unified design language across projects through standardized typography, spacing, and color palettes. The system utilizes a platform-agnostic design token system to maintain visual consistency across different technologies. This includes centralized management of brand colors, motion easing curves, and a curated library of accessible SVG icons. The framework covers a

The United States Web Design System is a government design system and accessible UI framework. It provides a collection of standardized CSS and JavaScript components, along with a CSS component library, specifically designed for building consistent federal government websites. The system allows for custom CSS theme development through the use of design tokens for colors, spacing, and typography. Users can customize visual themes and compile custom styles to maintain a unified brand identity across multiple web properties. The framework covers responsive interface design and web accessibility

Fomantic-UI is a component-based CSS library and frontend design system used to build consistent, responsive user interfaces. It functions as a CSS framework and responsive UI toolkit, providing a structured approach to managing typography, color palettes, and spacing. The project enables the development of custom UI components and the implementation of unified design systems across web applications. It provides a variable-driven theme compilation process to customize visual styles and a build-time system to compile selected components into production CSS bundles. The toolkit covers a broad

:cloud: The SCSS framework for the modern web.

From community websites to web applications, this CSS framework will help you achieve a consistent look and feel.

This repo contains core (HTML/CSS) implementation for PatternFly. Issues related to CSS/HTML and layout should be filed here.

Stack Overflow’s Design System

A lightweight, progressive, high-IQ CSS framework.