message: update CSS info
diff: @@ -29,9 +29,7 @@ import {
  } from '@primer/components'
  ```
  -### Styling
  -
  -This project uses [emotion] to generate static CSS for most component styles, but still relies on [Primer CSS] for some classname-based styles that haven't yet been ported over. Components that haven't yet been ported over rely on [a subset of Primer CSS](https://github.com/primer/components/blob/master/src/primer-components.scss) that's globally injected at import time.
  +Primer Components come with all necessary CSS built-in, so you don't need to worry about including [Primer CSS].
  #### Base styles
  