Specifies the style of line for an outline. An outline works similar to a border, except an outline doesn’t occupy any space, that is, it doest add to the width and height of an element. It is intended for highlighting an elements on the page.
outline-style: groove;
FF1.5+, SA1.3+, OP9.2+
| dashed | Dashed border line. |
| dotted | Draws a dotted line. |
| double | Draws two lines as border. |
| groove | Groove border value. |
| hidden | Border style occupies space but is not shown. |
| inset | Border style value. |
| none | Does not apply the properties style. |
| outset | Border style value. |
| ridge | Border line style. |
| solid | Draws a solid line. |