Responsive Page using media query

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

Being honest, I had no idea after adding some tags on HTML. I didn't know what to begin with in CSS, but I started from small things like colors, and searched everything I need and tried it. I'm proud that I finally made it, including the responsive part!

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

It was my first time to build a responsive web design, so I had to study about it. I studied about media query and made the background color and some margin settings in it so that it can be changes depends to the size of browser

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

In my CSS code, I feel like things are not really ordered. I just looked for the properties I need, try it and add it without any steps or any rules. So I think I need some advise about how to order them or the steps for using CSS.