CSS Padding | A Comprehensive Guide to CSS Padding
Shorthand CSS and Longhand CSS - Junior to Expert
padding-top - CSS: Cascading Style Sheets | MDN
CSS | CSS padding - Learn in 30 seconds from Microsoft MVP Awarded | wikitechy
Elad Shechter on Twitter: "Now you can unite #CSS 'vertical-padding' or 'horizontal-padding'. Works as well for the 'margin' and the 'border' properties. Supported in all updatable browsers. (while 'writing-mode' stays with its
CSS Padding vs Margin: Learn CSS Padding Order and div Padding