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 Basics: The Box Model, Margin, and Padding - CodeProject
Css/Training/padding and margin - W3C Wiki
What is the difference between padding and margin in CSS? - It_qna