border-bottom
Since UXP v2.0
Shorthand for specifying the style, color, and width of the top border.
Warning
An element's border can only consist of a single color. If you specify multiple border colors, you'll see a warning on the JavaScript console.
See: https://developer.mozilla.org/en/docs/Web/CSS/border-bottom
Quirks and Exceptions
- UXP does not support the
content-sizing
box layout model. As such, the width and height of all elements include the padding and border width.