# What is Design System?

A set of shared rules, components, and visual styles that keep every part of a product looking and behaving consistently. It is the source of truth for the whole team.

## In real work

Follow our design system. Use the spacing scale (4px base), brand color tokens, and typography styles. No custom values.

## Related terms

- [Component Library](https://prompthausapp.com/learn/component-library.md)
- [shadcn](https://prompthausapp.com/learn/shadcn.md)
- [Ant Design](https://prompthausapp.com/learn/ant-design.md)
- [Radix UI](https://prompthausapp.com/learn/radix-ui.md)
- [Tailwind CSS](https://prompthausapp.com/learn/tailwind-css.md)

## How is this different from Googling it?

Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.

- Category: UI Kits
- HTML: https://prompthausapp.com/learn/design-system
- App Store: https://apps.apple.com/us/app/prompthaus-ai-vocabulary/id6776314407