A responsive contact form using flexbox

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

Making the contact form element to start on a new line when at the mobile state.

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

The challenge i encountered was making the contact form responsive at the mobile state.I overcome that by asking a friend of mine which told me that i should check on the documentation of the property i used and it was helpful.

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

The responsiveness of the contact form,the width of the lastname input is not equal to the rest i try to adjust it but still.