CSS outline-width Property

Set the width of an outline:

div {outline-width: thick;}

Try it Yourself »

More “Try it Yourself” examples below.


Definition and Usage

An outline is a line that is drawn around elements (outside the borders) to make the element “stand out”.

The outline-width specifies the width of an outline.

Note: Always declare the outline-style property before the outline-width property. An element must have an outline before you change the width of it.

Default value: medium
Inherited: no
Animatable: yes, see individual propertiesRead about animatable – Try it
Version: CSS2
JavaScript syntax: object.style.outlineWidth=”12px”Try it

Tips and Notes

An outline is a line around an element. It is displayed around the margin of the element. However, it is different from the border property.

The outline is not a part of the element’s dimensions, therefore the element’s width and height properties do not contain the width of the outline.


CSS Syntax
outline-width: medium|thin|thick|length|initial|inherit;
Property Values
Value Description
medium Specifies a medium outline. This is default
thin Specifies a thin outline
thick Specifies a thick outline
length Allows you to define the thickness of the outline.
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit