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
html - CSS padding-left value of <code> is applied for only the first line - Stack Overflow
Learn CSS Padding in one video | Padding top, Padding bottom, Padding-right | Easy tutorial. - YouTube
Box model
CSS 概説 | ボックス
Padding Property in CSS Explained
CSS] パディングを指定する(padding) | ぱそまき
CSS Padding | A Comprehensive Guide to CSS Padding