The outline-style property

The outline-style property specifies a style of an outline - a border that does not take up space.

Syntax

selector {
	outline-style: value;
}

Value	Description
`solid`	Solid line.
`dotted`	Dotted line.
`dashed`	Dashed line.
`ridge`	Ridge line.
`double`	Double line. To see the effect, a border width should be at least `3px`.
`groove`	Groove line.
`inset`	Inset outline.
`outset`	Outset outline.
`none`	None outline.

Default value: none.

<div id="elem"></div>

#elem {
	outline-width: 1px;
	outline-style: solid;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 1px;
	outline-style: dotted;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 1px;
	outline-style: dashed;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 3px;
	outline-style: ridge;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 3px;
	outline-style: double;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 3px;
	outline-style: groove;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 3px;
	outline-style: inset;
	outline-color: black;
	width: 300px;
	height: 100px;
}

<div id="elem"></div>

#elem {
	outline-width: 3px;
	outline-style: outset;
	outline-color: black;
	width: 300px;
	height: 100px;
}