muin99/majhar ? reverse-engineered prompt

Build me a simple PHP website for managing and showing content from a database.

I want a clean homepage, a few basic pages, and a small admin area where I can add, edit, and delete records. It should use the existing app, assets, db, scripts, styles, and index.php structure, and it should look decent on desktop and mobile. Keep the design simple and modern, with some basic styling and reusable layout parts if that makes sense.

Make sure the app can connect to a database, pull data into the pages, and handle form submissions safely. Add sensible validation and friendly error messages so it feels polished. If anything important is missing, set it up in a practical way and keep the code easy to understand. Look up current PHP best practices online if you need to.