Regarding to the typing, you can fix by removing namespace import since generated typing is now exporting default value. You just simply import as default import:
import styles from "./App.css";
<h3 className={styles["background"]}>CSS Here</h3>
Plus, in order to have css getting appended in your document, you might have to use style-loader
.
For the parsing error, it’s most likely related to your linter, so try to have a look the way you set it up.
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