animation-timing-function

Defines an acceleration curve for each keyframe in a single animation.

Syntax

animation-timing-function: <value>;

where <value> can be one of the following keywords:

  • step-start: The easing curve for an animation that starts quickly and decelerates.
  • step-end: The easing curve for an animation that starts slowly and decelerates.
  • linear: The easing curve for an animation that starts and ends at the same speed.
  • ease: The easing curve for an animation that starts and ends at the same speed.
  • ease-in: The easing curve for an animation that starts slowly and accelerates.
  • ease-out: The easing curve for an animation that starts slowly and decelerates.
  • ease-in-out: The easing curve for an animation that starts and ends at the same speed.
  • cubic-bezier(): The easing curve for an animation that starts and ends at the same speed.

Note: Applied property by property from keyframe to keyframe.

Example 1

Apply ease-in-out to the animation-timing-function property of the div element:

div {
height: 200px;
width: 200px;
background-color: blue;
animation-name: slideright;
animation-duration: 4s;
animation-timing-function: ease-in-out;
}
@keyframes slideright {
0% {
margin-left: 0%;
}
50% {
margin-left: 50%;
}
100% {
margin-left: 100%;
}
}

Contributors

Interested in helping build Docs? Read the Contribution Guide or share your thoughts in this feedback form.

Learn CSS on Codecademy

Contributors