Almost complete Lauch CountDown Timer project

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

Well, I'm happy to partially finish the project using the technologies I'm studying. But there are some elements that I need to stylize like the time counter, because I still can't make this characteristic format of it.

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

Fortunately, I didn't have much difficulty in doing the project, because the only complexity is in the time counter, because the rest is just the stylization.

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

Certainly the format of the time counter. I still haven't been able to make this split format, similar to a calendar.