outline-style
The outline-style
CSS property sets the style of an element's outline. An outline is a line that is drawn around an element, outside the border
.
Try it
It is often more convenient to use the shorthand property outline
when defining the appearance of an outline.
Syntax
css
/* Keyword values */
outline-style: auto;
outline-style: none;
outline-style: dotted;
outline-style: dashed;
outline-style: solid;
outline-style: double;
outline-style: groove;
outline-style: ridge;
outline-style: inset;
outline-style: outset;
/* Global values */
outline-style: inherit;
outline-style: initial;
outline-style: revert;
outline-style: revert-layer;
outline-style: unset;
The outline-style
property is specified as any one of the values listed below.
Values
auto
-
Permits the user agent to render a custom outline style.
none
-
No outline is used. The
outline-width
is0
. dotted
-
The outline is a series of dots.
dashed
-
The outline is a series of short line segments.
solid
-
The outline is a single line.
double
-
The outline is two single lines. The
outline-width
is the sum of the two lines and the space between them. groove
-
The outline looks as though it were carved into the page.
ridge
-
The opposite of
groove
: the outline looks as though it were extruded from the page. inset
-
The outline makes the box look as though it were embedded in the page.
outset
-
The opposite of
inset
: the outline makes the box look as though it were coming out of the page.
Formal definition
Initial value | none |
---|---|
Applies to | all elements |
Inherited | no |
Computed value | as specified |
Animation type | by computed value type |
Formal syntax
outline-style =
auto |
<outline-line-style>
Examples
Setting outline style to auto
The auto
value indicates a custom outline style, described in the specification as "typically a style [that] is either a user interface default for the platform, or perhaps a style that is richer than can be described in detail in CSS, e.g. a rounded edge outline with semi-translucent outer pixels that appears to glow".
HTML
html
<div>
<p class="auto">Outline Demo</p>
</div>
CSS
css
.auto {
outline-style: auto; /* same result as "outline: auto" */
}
/* To make the Demo clearer */
* {
outline-width: 10px;
padding: 15px;
}
Result
Setting outline style to dashed and dotted
HTML
html
<div>
<div class="dotted">
<p class="dashed">Outline Demo</p>
</div>
</div>
CSS
css
.dotted {
outline-style: dotted; /* same result as "outline: dotted" */
}
.dashed {
outline-style: dashed;
}
/* To make the Demo clearer */
* {
outline-width: 10px;
padding: 15px;
}
Result
Setting outline style to solid and double
HTML
html
<div>
<div class="solid">
<p class="double">Outline Demo</p>
</div>
</div>
CSS
css
.solid {
outline-style: solid;
}
.double {
outline-style: double;
}
/* To make the Demo clearer */
* {
outline-width: 10px;
padding: 15px;
}
Result
Setting outline style to groove and ridge
HTML
html
<div>
<div class="groove">
<p class="ridge">Outline Demo</p>
</div>
</div>
CSS
css
.groove {
outline-style: groove;
}
.ridge {
outline-style: ridge;
}
/* To make the Demo clearer */
* {
outline-width: 10px;
padding: 15px;
}
Result
Setting outline style to inset and outset
HTML
html
<div>
<div class="inset">
<p class="outset">Outline Demo</p>
</div>
</div>
CSS
css
.inset {
outline-style: inset;
}
.outset {
outline-style: outset;
}
/* To make the Demo clearer */
* {
outline-width: 10px;
padding: 15px;
}
Result
Specifications
Specification |
---|
CSS Basic User Interface Module Level 4 # outline-style |
Browser compatibility
BCD tables only load in the browser