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The animation-duration CSS property specifies the length of time that an animation should take to complete one cycle.

/* Single animation */
animation-duration: 6s;
animation-duration: 120ms;

/* Multiple animations */
animation-duration: 1.64s, 15.22s;
animation-duration: 10s, 35s, 230ms;

It is often convenient to use the shorthand property animation to set all animation properties at once.

Initial value0s
Applies toall elements, ::before and ::after pseudo-elements
Inheritedno
Mediavisual
Computed valueas specified
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

Values

<time>
The duration that an animation takes to complete one cycle. This may be specified in either seconds (s) or milliseconds (ms). The value must positive or zero and the unit is required. A value of 0s, which is the default value, indicates that no animation should occur.

Note: Negative values are invalid, causing the declaration to be ignored. Some early, prefixed, implementations may consider them as identical to 0s.

Note: When you specify multiple comma-separated values on an animation-* property, they will be assigned to the animations specified in the animation-name property in different ways depending on how many there are. For more information, see Setting multiple animation property values.

Formal syntax

<time>#

Examples

See CSS animations for examples.

Specifications

Specification Status Comment
CSS Animations
The definition of 'animation-duration' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 3.0-webkit
43.0
(Yes)-webkit
(Yes)
5.0 (5.0)-moz
16.0 (16.0)[1]
10 12-o
12.10
4.0-webkit
Feature Android Chrome Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support 2.0-webkit ? (Yes)-webkit
(Yes)
5.0 (5.0)-moz
16.0 (16.0)[1]
No support No support 4.2-webkit 43.0

[1] In addition to the unprefixed support, Gecko 44.0 (Firefox 44.0 / Thunderbird 44.0 / SeaMonkey 2.41) added support for a -webkit- prefixed version of the property for web compatibility reasons behind the preference layout.css.prefixes.webkit, defaulting to false. Since Gecko 49.0 (Firefox 49.0 / Thunderbird 49.0 / SeaMonkey 2.46) the preference defaults to true.

See also

Document Tags and Contributors

 Last updated by: wbamberg,