CSS outline-offset Property

The outline-offset property is used to specify the space between an outline and the border edge of an element. The space between the outline and the element is transparent.

There are three ways in which outlines differ from borders:

  • an outline is a line that is drawn outside of the element’s border edge,
  • an outline can be non-rectangular,
  • an outline doesn’t take up space.

This property is one of the CSS3 properties.

It is not a part of the outline shorthand property. The outline-offset property must be specified separately.

Initial Value 0
Applies to All elements.
Inherited No.
Animatable Yes. Width of space is animatable.
Version CSS3
DOM Syntax object.style.outlineOffset = "20px";


outline-offset: length | initial | inherit;

Example of the outline-offset property:

<!DOCTYPE html>
    <title>Title of the document</title>
      div.ex1 {
        margin: 20px;
        border: 2px dotted #000;
        background-color: #8ebf42;
        outline: 4px solid #666;
        outline-offset: 10px;
    <h2>Outline-offset property example</h2>
    <div class="ex1">The outline-offset is 10px</div>


CSS outline-offset values list

In the given example the space between outline and the border is 10px.


Value Description
length Space between outline and the border edge of an element. The default value is 0.
initial Sets the property to its default value.
inherit Inherits the property from its parent element.

Browser support

chrome edge firefox safari opera
1.0+ 15.0+ 1.5+ 1.2+ 9.5+

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What can be said about the CSS outline-offset property according to the information provided in the given URL?

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