animation
英[ˌænɪˈmeɪʃn] 美[ˌænəˈmeʃən]
n. Angry, lively; cartoon production, cartoon shooting; [film and television] animation
Plural: animations
direction
英[dəˈrekʃn] 美[dɪˈrɛkʃən, daɪ-]
n. Direction; trend; aspect; instructions for usage
plural: directions
css animation-direction attribute syntax
How to use the animation-direction attribute?
The animation-direction attribute is used to define whether the animation should be played in reverse in turn; when the animation is played more than once, we can realize the animation turn by setting the value of animation-direction to alternate. Play in reverse.
Function: Define whether the animation should be played in reverse in turn.
Syntax: animation-direction: normal|alternate;
##Description: normal Default value. The animation should play normally. alternate The animation should take turns in reverse.
Note: If the animation is set to play only once, this attribute has no effect.
css animation-direction attribute example
<!DOCTYPE html>
<html>
<head>
<style>
div
{
width:100px;
height:100px;
background:red;
position:relative;
animation:myfirst 5s infinite;
animation-direction:alternate;
/* Safari and Chrome */
-webkit-animation:myfirst 5s infinite;
-webkit-animation-direction:alternate;
}
@keyframes myfirst
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
</style>
</head>
<body>
<p><strong>注释：</strong>Internet Explorer 9 以及更早的版本不支持 animation-direction 属性。</p>
<div></div>
</body>
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