How to add third-party CSS styles to a component?

Question

css

task: there is a component And with the styles. how to add some style to this component from another css file (maybe from a modular one) to a specific element of component A. Of course, you can write the style in the component, but I want to leave it clean in order to reuse it somewhere, even in another project.

Answer 1

I read it and didn't understand anything, then I read it again and didn't understand anything)

Answer 2

Attach a class to it from another css file. If modular - import and hang

Answer 3

@import "second.css";