The outline-color, outline-style, and outline-width and outline-offset CSS properties style a line around an element, outside of the border.

Learning resources on MDN

• outline-color
• outline-offset
• outline-style
• outline-width

Browser support

• Chrome 1 Released on 2008-12-11
• Chrome Android 18 Released on 2012-06-27
• Edge 15 Released on 2017-04-05
• Firefox 1.5 Released on 2005-11-29
• Firefox for Android 4 Released on 2011-03-29
• Safari 1.2 Released on 2004-02-02
• Safari on iOS 1 Released on 2007-06-29

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