Using padding to add space around widgets

Our GUI is coming along nicely. Next, we will improve the visual aspects of our widgets by adding a little space around them so that they can breathe.

Getting ready

While tkinter might have had a reputation for creating not-so-pretty GUIs, this has dramatically changed since version 8.5.

To better understand the major improvements to Tk, the following is a quote from the official website; you can find it at the following link: https://tkdocs.com/tutorial/onepage.html:

"This tutorial is designed to help people get up to speed quickly with building mainstream desktop graphical user interfaces with Tk, and in particular Tk 8.5 and 8.6. Tk 8.5 was an incredibly significant milestone...