animation-direction

The animation-direction CSS property specifies whether an animation should play forwards, backwards, or alternating back and forth.

/* Single animation */
animation-direction: normal;
animation-direction: reverse;
animation-direction: alternate;
animation-direction: alternate-reverse;

/* Multiple animations */
animation-direction: normal, reverse;
animation-direction: alternate, reverse, normal;

/* Global values */
animation-direction: inherit;
animation-direction: initial;
animation-direction: unset;

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

Initial valuenormal
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

normal
The animation plays forwards each cycle. In other words, each time the animation cycles, the animation will reset to the beginning state and start over again. This is the default value.
reverse
The animation plays backwards each cycle. In other words, each time the animation cycles, the animation will reset to the end state and start over again. Animation steps are performed backwards, and timing functions are also reversed. For example, an ease-in timing function becomes ease-out.
alternate
The animation reverses direction each cycle, with the first iteration being played forwards. The count to determine if a cycle is even or odd starts at one.
alternate-reverse
The animation reverses direction each cycle, with the first iteration being played backwards. The count to determinate if a cycle is even or odd starts at one.

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

<single-animation-direction>#

where
<single-animation-direction> = normal | reverse | alternate | alternate-reverse

Examples

See CSS animations for examples.

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes)-webkit
43.0
(Yes)-webkit
(Yes)
5.0 (5.0)-moz
16.0 (16.0)[1]
10 12-o
12.50
4.0-webkit
reverse 19 (Yes) 16.0 (16.0) 10 (Yes) (Yes)
alternate-reverse 19 (Yes) 16.0 (16.0) 10 (Yes) (Yes)
Feature Android Android Webview Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support ? ? (Yes)-webkit
(Yes)
5.0 (5.0)-moz
16.0 (16.0)[1]
? ? ? (Yes)-webkit
43.0
reverse No support ? (Yes) 16.0 (16.0) ? ? No support (Yes)-webkit
alternate-reverse ? ? (Yes) 16.0 (16.0) ? ? ? (Yes)-webkit

[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