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/CSS

transition-duration

The transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.

Try it

You may specify multiple durations; each duration will be applied to the corresponding property as specified by the transition-property property, which acts as a master list. If the number of specified durations is less than in the master list, the user agent repeats the list of durations. If the number of specified durations is more than in the master list, the list is truncated to the right size. In both the cases, the CSS declaration stays valid.

Syntax

/* <time> values */
transition-duration: 6s;
transition-duration: 120ms;
transition-duration: 1s, 15s;
transition-duration: 10s, 30s, 230ms;

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

Values

<time>: Is a <time> denoting the amount of time the transition from the old value of a property to the new value should take. A time of 0s indicates that no transition will happen, that is the switch between the two states will be instantaneous. A negative value for the time renders the declaration invalid.

Formal definition

Initial value	`0s`
Applies to	all elements, `::before` and `::after` pseudo-elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

transition-duration = 
  <time [0s,∞]>#

Examples

Example showing different durations

HTML

<div class="box duration-1">0.5 seconds</div>

<div class="box duration-2">2 seconds</div>

<div class="box duration-3">4 seconds</div>

<button id="change">Change</button>

CSS

.box {
  margin: 20px;
  padding: 10px;
  display: inline-block;
  width: 100px;
  height: 100px;
  background-color: red;
  font-size: 18px;
  transition-property: background-color font-size transform color;
  transition-timing-function: ease-in-out;
}

.transformed-state {
  transform: rotate(270deg);
  background-color: blue;
  color: yellow;
  font-size: 12px;
  transition-property: background-color font-size transform color;
  transition-timing-function: ease-in-out;
}

.duration-1 {
  transition-duration: 0.5s;
}

.duration-2 {
  transition-duration: 2s;
}

.duration-3 {
  transition-duration: 4s;
}

JavaScript

function change() {
  const elements = document.querySelectorAll("div.box");
  for (const element of elements) {
    element.classList.toggle("transformed-state");
  }
}

const changeButton = document.querySelector("#change");
changeButton.addEventListener("click", change);

Result

Specifications

Specification
CSS Transitions # transition-duration-property

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
`transition-duration`	261	1212	49164	1010	1512.110–15	93.1	4.42	2618	49164	1412.110.1–14	92	1.51.0