How to use the animation-direction property-CSS Tutorial-php.cn

How to use the animation-direction property

青灯夜游

Release： 2019-01-31 11:42:57

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

How to use the animation-direction property

CSS3 animation-direction property

Function:Defines whether it should take turns Play animation in reverse.

Syntax:

animation-direction: normal|alternate;

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normal: Default value. The animation should play normally.

alternate: The animation should be played in reverse in turn.

Note: If the animation-direction value is "alternate", the animation will play normally in odd numbers (1, 3, 5, etc.), and in even numbers (2, 4, etc.) , 6, etc.) plays backward.

Note: If the animation is set to play only once, this attribute has no effect.

CSS3 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>

<div></div>

</body>
</html>

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How to use the animation-direction property

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