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CSS outline properties

97.81

CSS3

The CSS outline properties draw a border around an element that does not affect layout, making it ideal for highlighting. This covers the `outline` shorthand, as well as `outline-width`, `outline-style`, `outline-color` and `outline-offset`.

Further reading:

  1. Can I use page for: CSS outline properties
  2. CSS Basic User Interface Module Level 3
  3. MDN Web Docs - CSS outline