Newsletter sign-up form with success message - HTML, CSS & Javascript

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

I thought my design was true to the original and I am very proud of the responsive css that was implemented.

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

The most challenging part for me was trying to figure out which components need to be developed seperate from each other, and ho to hide and introduce them once the email was validated.

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

If anything, I would like feedback on my javascript. However, all feedback is welcomed.