Responsive Contact-form using Css flex and grid plus JS

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

This one was pretty tough, But I think I have done a good work. Trying to provide solution for this challenge on my own.

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

The first challenge was that the query inputs once I select one of them and submit it its background changes per the instruction. But if the person did not complete the form and change his mind to choose the other query input then both the queries are gonna show the same green background with a green border color. The other challenge that I faced was that I needed to consider too many things while working with JS.

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

I need help on how to use JS to provide a simple solution for complex challenges. I need someone who can guide me and assign me on different projects.