CSS: Outline

By Xah Lee. Date: .

outline is similar to border. The difference is, outline does not take up space.

[see CSS: Border]

outline is shorthand for

Outline Basic Example

outline: solid 2px red;

Here's the code.

outline: solid 2px red;

Overlapping Outline

Here's example of overlapping outline.


Note, even the outlines have big thickness, but they don't take space, that's why they overlap.

Here's the code:

.outline-96123 {
outline: solid 20px rgb(255, 0, 0, 0.5);

.outline-05379 {
outline: solid 20px rgb(0, 255, 0, 0.5);

CSS Box Model

  1. CSS: Border
  2. CSS: Outline
  3. CSS: Margin vs Padding
  4. CSS: Box Sizing
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