transition-duration
Quick Summary for 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.
Code Usage for transition-duration
/* <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: unset; 
More Details for transition-duration

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.

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 there are fewer durations specified than in the master list, the user agent repeat the list of durations. If there are more durations, the list is truncated to the right size. In both case 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: 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 value0s
Applies toall elements, ::before and ::after pseudo-elements
Inheritedno
Computed valueas specified
Animation typediscrete

Formal syntax

<time>#

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 (let element of elements) {     element.classList.toggle("transformed-state");   } }  const changeButton = document.querySelector("#change"); changeButton.addEventListener("click", change); 
Result

Specifications

Specification
CSS Transitions Level 2 # transition-duration-property

See also

Using CSS transitions transition transition-property transition-timing-function transition-delay TransitionEvent

Last modified: Aug 12, 2021, by MDN contributors

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