How to import css modules to Framer?

Question

I developed locally a component that works and uses:

import "@mantine/core/styles.css";
import "@mantine/carousel/styles.css";

When I check to component in framer it works in the demo, however when built, the site display this error:

Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/css". Strict MIME type checking is enforced for module scripts per HTML spec.

I assume this is because this is not the way to import this. But then what is?