Mortgage repayment calculator -Vanilla JavaScript, Flexbox, Sass

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

It was a bit of tricky for me to conduct code refactoring for some parts of the code, but I managed to make it look cleaner, neater, and more readable and reusable.

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

Any feedback is widely welcome. I am always open to critics/suggestions for improvements etc.