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.

ABC XYZ

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);
}
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CSS Basics

  1. Basics
  2. Tag Matching Tutorial
  3. Selector Syntax
  4. Units

Color

  1. Color Syntax
  2. Color Names
  3. Opacity
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Font

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  2. Standard Web Fonts
  3. font-size
  4. Meaning of Font Size
  5. Font Weight
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Box Model

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

Layout

  1. Layout Tutorial
  2. Display Property
  3. Position: static, relative, fixed, absolute
  4. Pure CSS Table
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Line Wrap, Justification

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Box Decoration

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  4. Background Image
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Misc

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  12. Jargons Explained: Tag, Element, Node, Object, Attribute, Property, Method
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