animation-duration

The animation-duration CSS property sets the length of time that an animation takes to complete one cycle.

Try it

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

Syntax

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

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

/* Global values */
animation-duration: inherit;
animation-duration: initial;
animation-duration: revert;
animation-duration: revert-layer;
animation-duration: unset;

Values

<time>: The time that an animation takes to complete one cycle. This may be specified in either seconds (s) or milliseconds (ms). The value must be 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 definition

Initial value	`0s`
Applies to	all elements, `::before` and `::after` pseudo-elements
Inherited	no
Computed value	as specified
Animation type	Not animatable

Formal syntax

Examples

Setting animation duration

This animation has an animation-duration of 0.7 seconds.

HTML

<div class="box"></div>

CSS

.box {
  background-color: rebeccapurple;
  border-radius: 10px;
  width: 100px;
  height: 100px;
}

.box:hover {
  animation-name: rotate;
  animation-duration: 0.7s;
}

@keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

Result

Hover over the rectangle to start the animation.

See CSS animations for more examples.

Specifications

Specification
CSS Animations Level 2 # animation-duration

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`animation-duration`	43 3	12 12	49 16 5	10 Once the element has loaded, changing the value of this property has no effect.	30 15 12.1-15 12-15	9 4	43 2	43 18	49 16 5	30 14 12.1-14 12-14	9 4.2	4.0 1.0