border-image-outset CSS property.

Values: [ <length> | <number> ]{1,4}
Initial value: 0
Applies to: All elements, except internal table elements when 'border-collapse' is 'collapse'
Inherit: no
Percentages: N/A
Animatable:
Media: visual
Computed value:

CSS Standards

CSS 1
CSS 2
CSS 2.1
CSS 3
No
No
No
Yes