What's features I can use in a birthday wishing program

Question

Hello everyone! I am a beginner student and today's I going to create my first program in html.
Can you help me to improve the quality of this program and what's features I can use this program.

Answer 1

You should see old problem of sololearn by searching in code section as birthday celebration . So you can lot of knowledge about birthday codes

Answer 2

What about an animated birthday cake with the correct number of candles? 🎂