U.S. Web Design System (USWDS)

The United States Web Design System (USWDS) provides a comprehensive framework to build accessible, mobile-friendly government websites more easily. It's an active open-source community project supporting federal agencies in creating consistent and inclusive digital experiences for the public.

Key benefits and features include:

• Comprehensive Components: Access a wide array of pre-built interface elements, complete with guidance on user experience, accessibility, and implementation.
• Effective Patterns: Utilize proven design patterns to craft user experiences that are both effective and inclusive, adhering to best practices.
• Flexible Design Tokens: Employ design tokens—the fundamental building blocks of USWDS component design—for consistent styling and easier theme customization.
• Rapid Prototyping with Utilities: Quickly adapt designs and deliver prototypes using utility classes, often without writing any custom CSS.

USWDS fosters a strong community of government professionals and contributors, supporting numerous agencies and nearly 200 sites. It aims to make government digital services more usable and consistent for everyone.