Defines the style of the element's outlines.
default
outline-style: none;
Removes the element's outlines.
outline-style: dotted;
Turns the outline into a sequence of dots.
outline-style: dashed;
Turns the outline into a sequence of dashes.
outline-style: solid;
Turns the outline into a solid line.
outline-style: double;
Splits the outline into two lines.
outline-style: groove;
Sets an inset style to the outlines.