Inject css in your electron app using protocol api.

• Install the package in your project with yarn add electron-css-injector or npm install electron-css-injector

• In your main script, add:

import "electron-css-injector/main"

• In your preload script, add:

import { injectCSS } from "electron-css-injector"

window.addEventListener("DOMContentLoaded", () => {
   injectCSS("path/to/archive.css")
})