Import the package using a package manager.
yarn add @backstage/ui
Import the global CSS file at the root of your application.
import '@backstage/ui/css/styles.css';
Now you can start building your plugin using the new design system.
import { Flex, Button, Text } from '@backstage/ui';
<Flex>
<Text>Hello World</Text>
<Button>Click me</Button>
</Flex>;
Now that you have the basics down, you can start building your plugin using the new design system. Please familiarise yourself first with our theming principles. This will help you understand the core concepts of the design system. If you have any questions, please reach out to us on Discord.