Responsive newsletter sign-up using CSS Flexbox

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

I am glad that I got the media query to work smoothly and there are no problems with the transition. I am also glad that I was able to do the JavaScript based on another project.

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

Anytime I have issues I am usually able to find an MDN doc or YouTube video that helps

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

I am new to using flexbox, please feel free to leave helpful comments. Specifically I'm trying to figure out how to center the card in the middle of the document body similar to how the official solution is.