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CSS outline Property

The outline property is a shorthand that sets the following properties in a single declaration:

An outline is a line that is drawn around an element, outside the borders.

CSS Demo: outline

outline: solid;
outline: 10px double;
outline: thick double red;
outline: 8px dashed purple;
outline: double teal;
This is a box with a red border and an outline around it

Note: If outline-color is omitted, the color applied will be the color of the text.

Outlines are very similar to borders, but there are few major differences as well:

  • An outline does not take up space
  • Outlines do not have to be rectangular
  • Outline is always the same on all sides; you cannot specify different values for different sides of an element

Technical Details

Default value
as each of the properties of the shorthand:
  • outline-width: medium
  • outline-style: none
  • outline-color: invert, for browsers supporting it, currentColor for the other
Applies to all elements
Inherited no
Computed value as specified
Animatable yes See animatable properties. Demo
Version CSS2
JavaScript syntax object.style.outline = "10px inset red" Demo

CSS Syntax:

outline: outline-width outline-style outline-color|initial|inherit;


The following example shows how to use outline property:

Run code

Browser compatibility

The numbers in the table specify the first browser version that fully supports the outline property:

outline 1 1.5 7 1.2 8

Property Values

The following table describes the values of outline property:

Value Description
outline-width Sets the width of the outline
outline-style Sets the style of the outline (Required)
outline-color Sets the color of the outline
initial Sets this property to its default value
inherit Inherits this property from its parent element

See also

CSS Outline tutorial

CSS outline-color property

CSS outline-offset property

CSS outline-style property

CSS outline-width property