Not working as expected after deployed

I creates one web app using Nextjs14 which was working good in the build stage and in the dev stage. But after deployed in the netlify or vercel its not shows the css and tailwindcss which that are worked perfectly in the development and build stage in my pc.

This is my github repo which is works better before deploy:

If it did not work on Vercel, then it’s definitely an issue with your project.