Responsive product page using flexbox

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

Learning a little bit more about CSS animation and CSS itself

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

It was a bit difficult to make the website responsive, I should improve that.

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

I am using flexbox with almost all components, how could I improve my css code?