chore: remove the leftovers of the Vite template

README.md

@@ -140,7 +140,7 @@ An icon without text needs a label for screen readers, for example `<Button aria
 - **Set up.** `tailwindcss` and `@tailwindcss/vite` are in `devDependencies`, because they are only needed to build. The Vite plugin is in `vite.config.ts`, and `src/index.css` starts with `@import 'tailwindcss';`. There is no `tailwind.config.js`: Tailwind 4 is configured in CSS, with [`@theme`](https://tailwindcss.com/docs/theme).
 - **Small CSS.** Only the classes that the code uses end up in the built CSS. We checked it: a class that is used is in the built file, and a class that is not used is not.
 - **Browsers.** Tailwind 4 is made for Chrome 111, Safari 16.4 and Firefox 128 or newer. Older browsers are not supported.
-- **Our own CSS wins over utility classes.** Tailwind puts its styles in CSS layers, and CSS that is not in a layer beats CSS that is, whatever the specificity. A rule in `src/index.css` or `src/App.css` therefore overrides a utility class on the same element. If a class seems to have no effect, look for a plain CSS rule for the same property. New styles should be written as utility classes, or inside `@layer`.
+- **Our own CSS wins over utility classes.** Tailwind puts its styles in CSS layers, and CSS that is not in a layer beats CSS that is, whatever the specificity. A rule in `src/index.css` or `src/styles/global.css` therefore overrides a utility class on the same element. If a class seems to have no effect, look for a plain CSS rule for the same property. New styles should be written as utility classes, or inside `@layer`.
 - **Preflight.** Tailwind's base styles reset margins, heading sizes and buttons. Our own CSS is not in a layer, so it still wins where it sets the same property.
 
 **Choices we made**