Https://www.freecodecamp.org/learn/responsive-web-design/basic-css /add-different-padding-to-each-side-of-an-element - HTML-CSS - The freeCodeCamp Forum
CSS padding-bottom Property - server2client.com
Box model
Email Spacing: Tips for Margins and HTML Email Padding
html - padding-bottom not showing up on Firefox - Stack Overflow
box-sizing | CSS-Tricks - CSS-Tricks
How to Apply Padding with CSS | Webucator
padding-top - CSS: Cascading Style Sheets | MDN
CSS Padding vs Margin: Learn CSS Padding Order and div Padding
When to use margin vs padding in CSS - Stack Overflow