CSS @keyframes Rule
Example
Make an element move gradually 200px down:
@keyframes mymove
{
from {top: 0px;}
to {top: 200px;}
}
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The @keyframes rule specifies the animation code.
The animation is created by gradually changing from one set of CSS styles to another.
During the animation, you can change the set of CSS styles many times.
Specify when the style change will happen in percent, or with the keywords "from" and "to", which is the same as 0% and 100%. 0% is the beginning of the animation, 100% is when the animation is complete.
Tip: For best browser support, you should always define both the 0% and the 100% selectors.
Note: Use the animation properties to control the appearance of the animation, and also to bind the animation to selectors.
Note: The !important rule is ignored in a keyframe (See last example on this page).
Browser Support
The numbers in the table specifies the first browser version that fully supports the rule.
Numbers followed by -webkit-, -moz- or -o- specify the first version that worked with a prefix.
| Property | |||||
|---|---|---|---|---|---|
| @keyframes | 43.0 4.0 -webkit- |
10.0 | 16.0 5.0 -moz- |
9.0 4.0 -webkit- |
30.0 15.0 -webkit- 12.0 -o- |
CSS Syntax
@keyframes animationname {keyframes-selector {css-styles;}}
Property Values
| Value | Description |
|---|---|
| animationname | Required. Defines the name of the animation. |
| keyframes-selector | Required. Percentage of the animation duration. Legal values: 0-100% Note: You can have many keyframes-selectors in one animation. |
| css-styles | Required. One or more legal CSS style properties |
More Examples
Example
Add many keyframe selectors in one animation:
@keyframes mymove
{
0% {top: 0px;}
25% {top: 200px;}
50% {top: 100px;}
75% {top: 200px;}
100% {top: 0px;}
}
Try it Yourself »
Example
Change many CSS styles in one animation:
@keyframes mymove
{
0% {top: 0px; background: red; width: 100px;}
100% {top: 200px; background: yellow; width: 300px;}
}
Try it Yourself »
Example
Many keyframe selectors with many CSS styles:
@keyframes mymove
{
0% {top: 0px; left: 0px; background: red;}
25% {top: 0px; left: 100px; background: blue;}
50% {top: 100px; left: 100px; background: yellow;}
75% {top: 100px; left: 0px; background: green;}
100% {top: 0px; left: 0px; background: red;}
}
Try it Yourself »
Example
Note: The !important rule is ignored in a keyframe:
@keyframes myexample
{
from {top: 0px;}
50% {top: 100px !important;} /* ignored
*/
to {top: 200px;}
}
Try it Yourself »
Related Pages
CSS tutorial: CSS Animations