Remove outdated Tailwind CSS instructions and redundant content in README.md, streamline setup and styling sections.

Author: liberaldev

README.md

@@ -14,7 +14,6 @@ This is the [Jekyll](http://www.jekyllrb.com/) source code for the official [Rub
 ### Prerequisites
 
 - **Ruby** (latest stable version recommended) - [Install Ruby](https://www.ruby-lang.org/en/documentation/installation/)
-- **Node.js** (for Tailwind CSS) - [Install Node.js](https://nodejs.org/)
 - **Git** - [Install Git](https://git-scm.com/downloads)
 
 ### Get It Running
@@ -67,61 +66,10 @@ This is the [Jekyll](http://www.jekyllrb.com/) source code for the official [Rub
 # Quick development server (faster rebuilds)
 bundle exec jekyll serve --watch --future --incremental
 
-# development server (faster rebuilds, but may miss CSS changes)
-bundle exec jekyll serve --watch --future
-
 # Full build (for testing)
 bundle exec rake build
 ```
 
-⚠️ **About `--incremental` flag**: While it speeds up rebuilds, it can sometimes miss changes due to caching. If your changes aren't appearing:
-1. Try restarting the server
-2. If that doesn't work, clean the cache:
-   ```sh
-   rm -rf _site .jekyll-cache
-   bundle exec jekyll serve --watch --future
-   ```
-
-### 🎨 Working with Tailwind CSS
-
-This site uses [Tailwind CSS](https://tailwindcss.com/) via [jekyll-postcss-v2](https://github.com/mhanberg/jekyll-postcss-v2).
-
-**CSS is automatically processed during Jekyll builds**, so you don't need to run separate commands in most cases.
-
-#### CSS File Structure
-- `stylesheets/main.css` - Main CSS file (imports all others + Tailwind)
-- `stylesheets/variables.css` - CSS custom properties
-- `stylesheets/components/*.css` - Component-specific styles
-
-#### When CSS Changes Don't Apply
-
-If you modify `stylesheets/components/*.css` or `variables.css` and changes aren't reflected:
-
-1. **Without `--incremental`**: Changes should be detected automatically
-2. **With `--incremental`**: Restart Jekyll first
-   ```sh
-   # Stop the server (Ctrl+C) and restart
-   bundle exec jekyll serve --watch --future --incremental
-   ```
-3. **Still not working?** Clean build cache and restart (this always works):
-   ```sh
-   rm -rf _site .jekyll-cache
-   bundle exec jekyll serve --watch --future
-   ```
-
-💡 **Tip**: For CSS-heavy development, consider using `--watch --future` without `--incremental` for more reliable change detection.
-
-#### How It Works
-
-CSS processing happens automatically via PostCSS:
-- `postcss-import` - Combines all CSS files into one
-- `tailwindcss` - Processes Tailwind utilities based on HTML/Markdown content
-- `autoprefixer` - Adds vendor prefixes for browser compatibility
-
-Configuration files:
-- `tailwind.config.js` - Tailwind configuration
-- `postcss.config.js` - PostCSS plugins
-
 ### Testing Your Changes
 
 **Important**: Always run the full test suite before submitting a pull request:
@@ -176,12 +124,17 @@ If you can't build locally or want to test under production conditions:
 - **Found a bug?** [Open an issue](https://github.com/ruby/www.ruby-lang.org/issues)
 - **Need more info?** Check the [project wiki](https://github.com/ruby/www.ruby-lang.org/wiki)
 
+## Styling with Tailwind CSS
+
+This site uses [Tailwind CSS](https://tailwindcss.com/) for styling. 
+
+> **Note:** When you modify CSS files, it might take a moment for the changes to be reflected in the preview, as the CSS needs to be rebuilt.
 
 ## Testing
 
 Besides generating and previewing the site
 you can perform additional tests with these tasks:
- 
+
 ``` sh
 bundle exec rake lint          # run linter on markdown files
 bundle exec rake check:markup  # check markup for all generated pages