Tip calculator app

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

I made good use of the display grid and variable declarations in javascript. I need to improve on the css part.

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

The function declaration part of javascript wasn't easy. I needed time to understand the mechanism. I have studied these aspects.

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

The use of functions and parameters.