CSS3 border-image-outset Property
Place the fringe picture 10 pixels outside the outskirt edges of an element:
fringe picture source: url(welookups.png);
fringe picture start: 10px;
Definition and Usage
The fringe picture start property indicates the sum by which the outskirt picture territory stretches out past the fringe box.
Tip: Also take a gander at the border-image property (a shorthand property for setting all the fringe picture * properties).
The numbers in the table determine the primary program form that completely bolsters the property.
Note: The fringe picture beginning property can take from one to four values (top, right, base, and left sides). On the off chance that the fourth esteem is overlooked, it is equivalent to the second. On the off chance that the third one is additionally overlooked, it is equivalent to the first. On the off chance that the second one is additionally excluded, it is equivalent to the first.
|length||A length unit indicating how a long way from the edges the fringe picture will show up. Default esteem is 0|
|number||Represent products of the relating outskirt width|
|initial||Sets this property to its default esteem. initial|