Form created with CSS, based on the BEM methodology and JavaScript

What are you most proud of, and what would you do differently next time?

It's a project that I've really taken my time with, as I've redone it from scratch about 5 or 6 times because I always saw something that I could improve or fix. So, I'm satisfied with the result, although I think there's still a lot that can be improved.

What challenges did you encounter, and how did you overcome them?

As always I try to have the code as clean and organized as possible so that is always my main challenge, then with javascript it has been difficult for me to find the correct algorithm so that everything works properly, so by trial and error I made it work

What specific areas of your project would you like help with?

As I always like to say, any constructive criticism is welcome.