Can someone teach/ show me how to code this tool using HTML and JavaScript?

Question

I found this tool and want to learn how to create such tools.
Link to the tool: https://mithilhassan.github.io/wedding-invitation-card-generator/

This is wedding wording tool and users can also download their created file in pdf format after completing the form. Can you show me how to code it?

Thank you. Appreciate your time and efforts!

Answer 1

You can study the code here:
https://github.com/MithilHassan/wedding-invitation-card-generator