Responsive Newsletter SignUp Form using flexbox and JS

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

I'm proud of the use of functions to retrieve the data from the form. Maybe next time, I can structure the function differently.

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

I had problems with the proportion of the image; I only wanted to use one image and resize it depending on the screen size. I overcame it using 'auto', but I don’t like it all that much.

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

I would like to know how I can adjust the proportions of the image and if there's a way to improve the function in js.