shindevaibhavi290-prog/MERN_applicaion_project ? reverse-engineered prompt

Build me a simple MERN app with a React frontend and a Node backend that can run locally, in Docker, and on Kubernetes.

I want the frontend to be a clean, modern landing page with a hero section and a simple interactive area that shows data coming from the backend. The backend should expose a small API, and the frontend should call it and display the response clearly. Keep the app easy to start and easy to understand, with sensible styling and a polished look.

Please make sure both parts work together without extra setup, and include the files needed so I can run the frontend and backend separately. If anything about the best current setup is unclear, look up the latest docs online and use that.

Also make sure the Kubernetes manifests are wired up for the frontend, backend, and MongoDB so the whole stack can be deployed together.