Improve documentation for Syntax module

packages/website/content/docs/installation.mdx

@@ -108,4 +108,15 @@ import Link from 'quill/formats/link';
 // Or const Link = Quill.import('formats/link');
 ```
 
+### Styles
+
+Quill's npm package also comes with the stylesheets for the core and themes, just like the CDN build.
+Those stylesheets live in the `dist` directory.
+
+You can import them in your JavaScript files if you have a proper bundler setup.
+
+```js
+import "quill/dist/quill.core.css";
+```
+
 Refer to [webpack-example](https://github.com/quilljs/webpack-example) for a sample project that uses Quill in a webpack project.

packages/website/content/docs/modules/syntax.mdx

@@ -46,6 +46,8 @@ quill.setContents(
 `}}
 />
 
+### Use npm Package
+
 If you install highlight.js as an npm package and don't want to expose it to `window`, you need to pass it to syntax module as an option:
 
 ```js

packages/website/src/components/Sandpack.jsx

@@ -3,7 +3,6 @@ import {
   SandpackCodeEditor,
   SandpackFileExplorer,
   SandpackPreview,
-  Sandpack as RawSandpack,
   useSandpack,
 } from '@codesandbox/sandpack-react';
 import { useEffect, useState } from 'react';