Newsletter sing-up form

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

As always I'm proud to complete the challenge =)

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

Well, I tried to find a solution for hover effect of the buttons cos apparently one can't apply gradient to box-shadow. I had to use pseudo-eleme before with filter: blur.

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

Any suggestions welcomed and accepted =) Especially advice about code organization and forms accessibility.