You can have a bit of a stylesheet inline in an Angular 2 component though I don't recommend it really.

This has a list of metadata properties available for a component such as selector, templateUrl, and providers and one of them is "styles" and this should have a setting with square braces and backticks inside of the square braces and CSS styles (just as they would appear in a stylesheet) inside of the backticks. The metadata properties for components are:

1. animations
2. changeDetection
3. encapsulation
4. entryComponents
5. exportAs
6. host
7. inputs
8. interpolation
9. moduleId
10. outputs
11. providers
12. queries
13. selector
14. styleUrls
15. styles
16. template
17. templateUrl
18. viewProviders