It looks like you have your configuration set up correctly. One thing to check is that you are running the correct command to compile your assets. The command should be npm run dev and not sail npm run dev.
If that doesn't work, you can try running npm run watch instead. This will watch for any changes you make to your Tailwind config and automatically recompile your assets.
If that still doesn't work, you can try running npm run build to manually build your assets. This will generate a tailwind.css file in your public/css directory.
If none of these solutions work, you can try running npm run production to generate a minified version of your Tailwind CSS.
Hope this helps!