BlogCard - trying to do a responsive design

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

I'm proud to be learning how to create div.

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

I still don't have a sense of whether the design is responsive or not, but the important thing is that I'm trying.

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

I'd like help, if possible, by explaining and giving examples of responsive designs, or refer me somewhere that can explain about this content.