The <dimension>
CSS data type represents a <number>
with a unit attached to it, for example 10px
.
CSS uses dimensions to specify distances (<length>
), durations (<time>
), frequencies (<frequency>
), resolutions (<resolution>
), and other quantities.
Syntax
The syntax of <dimension>
is a <number>
immediately followed by a unit which is an identifier. Unit identifiers are case insensitive.
Examples
Valid dimensions
12px 12 pixels 1rem 1 rem 1.2pt 1.2 points 2200ms 2200 milliseconds 5s 5 seconds 200hz 200 Hertz 200Hz 200 Hertz (values are case insensitive)
Invalid dimensions
12 px The unit must come immediately after the number. 12"px" Units are identifiers and therefore unquoted. 3sec The seconds unit is abbreviated "s" not "sec".
Specifications
Specification | Status | Comment |
---|---|---|
CSS Values and Units Module Level 4 The definition of '<dimension>' in that specification. |
Editor's Draft | Adds cap , ic , lh , rlh , vi , vb |
CSS Values and Units Module Level 3 The definition of '<dimension>' in that specification. |
Candidate Recommendation | Adds ch , rem , vw , vw , vmin , vmax , Q |
CSS Level 2 (Revision 1) The definition of '<dimension>' in that specification. |
Recommendation | Defined under Numbers and Length |
CSS Level 1 The definition of '<dimension>' in that specification. |
Recommendation | Initial definition under "length units" |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
<dimension> | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 5 | Opera Full support 3.5 | Safari Full support 1 | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
See also
- CSS data types
- Learn to style HTML using CSS
- CSS distances (
<length>
), durations (<time>
), frequencies (<frequency>
), and resolutions (<resolution>
)