12s         Positive integer     -456ms      Negative integer     4.3ms       Non-integer     14mS        The unit is case-insensitive, although capital letters are not recommended.     +0s         Zero with a leading + and a unit     -0ms        Zero with a leading - and a unit 

<time>

The <time> CSS data type represents a time value expressed in seconds or milliseconds. It is used in animation, transition, and related properties.

Syntax

The <time> data type consists of a <number> followed by one of the units listed below. Optionally, it may be preceded by a single + or - sign. As with all dimensions, there is no space between the unit literal and the number.

Note: Although the number 0 is always the same regardless of unit, the unit may not be omitted. In other words, 0 is invalid and does not represent 0s or 0ms.

Units

Represents a time in seconds. Examples: 0s, 1.5s, -60s.

Represents a time in milliseconds. Examples: 0ms, 150.25ms, -60000ms.

Note: Conversion between s and ms follows the logical 1s = 1000ms.

Examples

Valid times

    12s         Positive integer     -456ms      Negative integer     4.3ms       Non-integer     14mS        The unit is case-insensitive, although capital letters are not recommended.     +0s         Zero with a leading + and a unit     -0ms        Zero with a leading - and a unit 

Invalid times

0           Although unitless zero is allowed for <length>s, it's invalid for <time>s. 12.0        This is a <number>, not a <time>, because it's missing a unit. 7 ms        No space is allowed between the number and the unit. 

Specifications

See also

Last modified: Nov 21, 2021, by MDN contributors