CSS3 @keyframes Rule
To create animations in CSS3, you will have to learn about the @keyframes rule.
The @keyframes rule is where the animation is created. Specify a CSS style inside the @keyframes rule and the animation will gradually change from the current style to the new style.
Internet Explorer 10, Firefox, and Opera supports the @keyframes rule and animation property.
Chrome and Safari requires the prefix -webkit-.
Note: Internet Explorer 9, and earlier versions, does not support the @keyframe rule or animation property.
When the animation is created in the @keyframe, bind it to a selector, otherwise the animation will have no effect.
Bind the animation to a selector by specifying at least these two CSS3 animation properties:
- Specify the name of the animation
- Specify the duration of the animation
Note: You must define the name and the duration of the animation. If duration is omitted, the animation will not run, because the default value is 0.
What are Animations in CSS3?
An animation is an effect that lets an element gradually change from one style to another.
You can change as many styles you want, as many times you want.
Specify when the change will happen in percent, or 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.
For best browser support, you should always define both the 0% and the 100% selectors.
CSS3 Animation Properties
The following table lists the @keyframes rule and all the animation properties:
|@keyframes||Specifies the animation||3|
|animation||A shorthand property for all the the animation properties, except the animation-play-state property||3|
|animation-name||Specifies the name of the @keyframes animation||3|
|animation-duration||Specifies how many seconds or milliseconds an animation takes to complete one cycle. Default 0||3|
|animation-timing-function||Describes how the animation will progress over one cycle of its duration. Default "ease"||3|
|animation-delay||Specifies when the animation will start. Default 0||3|
|animation-iteration-count||Specifies the number of times an animation is played. Default 1||3|
|animation-direction||Specifies whether or not the animation should play in reverse on alternate cycles. Default "normal"||3|
|animation-play-state||Specifies whether the animation is running or paused. Default "running"||3|
The two examples below sets all the animation properties:
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