Praver1980/Birthday-V2 ? reverse-engineered prompt

Build me a cute birthday themed web page that opens in the browser and feels like a little surprise card.

I want it to be simple, colorful, and playful, with a nice landing screen, birthday message text, and some fun visual touches like balloons, confetti, or little animations. It should work well on phone and desktop, and feel polished enough to share with someone on their birthday.

Please make sure the page is self contained, uses the existing images and assets where useful, and includes the usual web app basics like a proper title, icon, and installable app feel if that makes sense. If you need to check anything current in the docs or browser behavior, go ahead and look it up online.

Keep it lightweight and easy to customize later, especially the message text and colors.