How to use css animation-direction property-Front-end Q&A-php.cn

How to use css animation-direction property

藏色散人

Release： 2019-05-29 09:15:14

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css The animation-direction property 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 in reverse by setting the value of animation-direction to alternate.

How to use css animation-direction property

How to use the css animation-direction property?

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;

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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 property usage 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>
</html>

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Effect output:

How to use css animation-direction property

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