The <number>
CSS data type represents a number, being either an integer or a number with a fractional component.
Syntax
The syntax of <number>
extends the syntax of <integer>
. A fractional value is represented by a .
followed by one or more decimal digits, and may be appended to an integer. There is no unit associated with numbers.
Interpolation
When animated, values of the <number>
CSS data type are interpolated as real, floating-point numbers. The speed of the interpolation is determined by the timing function associated with the animation.
Examples
Valid numbers
12 A raw <integer> is also a <number>. 4.01 Positive fraction -456.8 Negative fraction 0.0 Zero +0.0 Zero, with a leading + -0.0 Zero, with a leading - .60 Fractional number without a leading zero 10e3 Scientific notation -3.4e-2 Complicated scientific notation
Invalid numbers
12. Decimal points must be followed by at least one digit. +-12.2 Only one leading +/- is allowed. 12.1.1 Only one decimal point is allowed.
Specifications
Specification | Status | Comment |
---|---|---|
CSS Values and Units Module Level 4 The definition of '<number>' in that specification. |
Editor's Draft | No significant change. |
CSS Values and Units Module Level 3 The definition of '<number>' in that specification. |
Candidate Recommendation | No significant change. |
CSS Level 2 (Revision 1) The definition of '<number>' in that specification. |
Recommendation | Explicit definition. |
CSS Level 1 The definition of '<number>' in that specification. |
Recommendation | Implicit definition. |
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
<number> | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 5 | Opera Full support 2 | Safari Full support 1 | WebView Android Full support 1 | 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 |
Scientific notation | Chrome Full support 43 | Edge Full support 12 | Firefox Full support 29 | IE Full support 11 | Opera Full support 30 | Safari Full support 10.1 | WebView Android Full support 43 | Chrome Android Full support 43 | Firefox Android Full support 29 | Opera Android Full support 30 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support