Responsive Social Links Profile with HTML/CSS :) (Second attempt)

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

I'm getting better utilizing Flex and it's making everything much, much faster. Also helps with getting the responsive designs to work correctly.

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

I have problems with nesting divs and using flex box. Sometimes I want to do things, but nothing happens. I overcome this challenge by watching what happens in the live server anytime I try something new.

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

Is my code easy to read? How can I make it easier to understand?