A propriedade CSS animation-fill-mode define como uma animação CSS aplica estilos ao seu destino antes e depois de sua execução.


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


/* Single animation */
animation-fill-mode: none;
animation-fill-mode: forwards;
animation-fill-mode: backwards;
animation-fill-mode: both;

/* Multiple animations */
animation-fill-mode: none, backwards;
animation-fill-mode: both, forwards, none;



A animação não aplicará nenhum estilo ao destino quando não estiver em execução. Em vez disso, o elemento será exibido usando quaisquer outras regras CSS aplicadas a ele. Este é o valor padrão.


The target will retain the computed values set by the last keyframe (en-US) encountered during execution. The last keyframe depends on the value of animation-direction (en-US) and animation-iteration-count (en-US):

animation-direction animation-iteration-count last keyframe encountered
normal even or odd 100% or to
reverse even or odd 0% or from
alternate even 0% or from
alternate odd 100% or to
alternate-reverse even 100% or to
alternate-reverse odd 0% or from

The animation will apply the values defined in the first relevant keyframe (en-US) as soon as it is applied to the target, and retain this during the animation-delay period. The first relevant keyframe depends on the value of animation-direction (en-US):

animation-direction first relevant keyframe
normal or alternate 0% or from
reverse or alternate-reverse 100% or to

The animation will follow the rules for both forwards and backwards, thus extending the animation properties in both directions.

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

Formal syntax

animation-fill-mode = 

<single-animation-fill-mode> =
none |
forwards |
backwards |


You can see the effect of animation-fill-mode in the following example. It demonstrates how, for an animation that runs for an infinite time, you can cause it to remain in its final state rather than reverting to the original state (which is the default).


<p>Move your mouse over the gray box!</p>
<div class="demo">
 <div class="growsandstays">This grows and stays big.</div>
  <div class="grows">This just grows.</div>


.demo {
  border-top: 100px solid #ccc;
  height: 300px;

@keyframes grow {
  0% { font-size: 0; }
  100% { font-size: 40px; }

.demo:hover .grows {
  animation-name: grow;
  animation-duration: 3s;

.demo:hover .growsandstays {
  animation-name: grow;
  animation-duration: 3s;
  animation-fill-mode: forwards;

See CSS animations for more examples.


Specification Status Comment
CSS Animations Level 1
The definition of 'animation-fill-mode' in that specification.
Rascunho atual Initial definition.
Initial valuenone
Aplica-se aall elements, ::before and ::after pseudo-elements
Computed valueas specified
Animation typeNot animatable

Compatibilidade com navegadores

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See also