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CSS outline Property
Definition and Usage
An outline is a line that is drawn around elements (outside the borders) to make the element "stand out".
The outline shorthand property sets all the outline properties in one declaration.
The properties that can be set, are (in order): outline-color, outline-style, outline-width.
If one of the values above are missing, e.g. "outline:solid #ff0000;", the default value for the missing property will be inserted, if any.
| Default value: | invert none medium |
|---|---|
| Inherited: | no |
| Version: | CSS2 |
| JavaScript syntax: | object.style.outline="#0000FF dotted thin" |
Browser Support
The outline property is supported in all major browsers.
Note: IE8 supports the outline property only if a !DOCTYPE is specified.
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.
Property Values
| Value | Description |
|---|---|
| outline-color | Specifies the color of the outline |
| outline-style | Specifies the style of the outline |
| outline-width | Specifies the width of outline |
| inherit | Specifies that the value of the outline property should be inherited from the parent element |
Related Pages
CSS tutorial: CSS Outline
HTML DOM reference: outline property
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