animation-duration - [ CSS 4.2.4参考手册 ] - 在线原生手册

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语法：

animation-duration：<time>[,<time>]*

默认值：0s

适用于：所有元素，包含伪对象:after和:before

继承性：无

动画性：否

计算值：指定值

媒体：视觉

取值：

<time>：指定对象动画的持续时间

说明：

检索或设置对象动画的持续时间

如果提供多个属性值，以逗号进行分隔。
对应的脚本特性为animationDuration。

兼容性：

Values	IE	Firefox	Chrome	Safari	Opera	iOS Safari	Android Browser	Android Chrome
Basic Support	6.0-9.0	2.0-4.0	4.0-42.0^-webkit-	6.0-8.0^-webkit-	15.0-29.0^-webkit-	6.0-8.4^-webkit-	2.1-3.0^-webkit- ^#1	18.0-42.0^-webkit-
	10.0+	5.0-15.0^-moz-	43.0+	9.0+	30.0+	9.0+	4.0-40.0^-webkit-
	10.0+	16.0+	43.0+	9.0+	30.0+	9.0+	4.0-40.0^-webkit-

在一些场景中会有错误行为
部分浏览器不支持伪元素动画，或者支持得不够好，尽可能不要利用伪元素来做动画

示例：

实例

<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="utf-8" />
<title>animation-duration_CSS参考手册_web前端开发参考手册系列</title>
<meta name="author" content="Joy Du(飘零雾雨), dooyoe@gmail.com, www.doyoe.com" />
<style>
html{height:100%;
    background:-moz-linear-gradient(top,#fff,#000);
    background:-webkit-linear-gradient(top,#fff,#000);
    background:linear-gradient(to bottom,#fff,#000);
}
h1{font-size:16px;}
div{position:absolute;top:50%;left:50%;width:500px;height:80px;margin:-40px 0 0 -250px;color:#fff;font:bold 50px/1.5 Georgia,arial,simsun,serif;text-shadow:1px 1px 0 rgba(0,0,0,.8),2px 2px 3px rgba(255,255,255,.3);
    -moz-animation:animations 2s ease-in-out forwards;
    -webkit-animation:animations 2s ease-in-out forwards;
    animation:animations 2s ease-in-out forwards;
}
@-moz-keyframes animations{
    0%{-moz-transform:translate(0,-150px);}
    30%{-moz-transform:translate(0,-150px);}
    40%{-moz-transform:translate(0,0);}
    42%{-moz-transform:scale(1.1,.6) skew(5deg,5deg);}
    48%{-moz-transform:scale(1) skew(0,0);}
    54%{-moz-transform:scale(1.05,.8) skew(4deg,4deg);}
    60%{-moz-transform:scale(1) skew(0,0);}
    64%{-moz-transform:skew(3deg,3deg);}
    68%{-moz-transform:skew(0,0);}
    75%{-moz-transform:skew(2deg,2deg);}
    83%{-moz-transform:skew(0,0);}
    92%{-moz-transform:skew(1deg,1deg);}
    100%{-moz-transform:skew(0,0);}
}
@-webkit-keyframes animations{
    0%{-webkit-transform:translate(0,-150px);}
    30%{-webkit-transform:translate(0,-150px);}
    40%{-webkit-transform:translate(0,0);}
    42%{-webkit-transform:scale(1.1,.6) skew(5deg,5deg);}
    48%{-webkit-transform:scale(1) skew(0,0);}
    54%{-webkit-transform:scale(1.05,.8) skew(4deg,4deg);}
    60%{-webkit-transform:scale(1) skew(0,0);}
    64%{-webkit-transform:skew(3deg,3deg);}
    68%{-webkit-transform:skew(0,0);}
    75%{-webkit-transform:skew(2deg,2deg);}
    83%{-webkit-transform:skew(0,0);}
    92%{-webkit-transform:skew(1deg,1deg);}
    100%{-webkit-transform:skew(0,0);}
}
@keyframes animations{
    0%{transform:translate(0,-150px);}
    30%{transform:translate(0,-150px);}
    40%{transform:translate(0,0);}
    42%{transform:scale(1.1,.6) skew(5deg,5deg);}
    48%{transform:scale(1) skew(0,0);}
    54%{transform:scale(1.05,.8) skew(4deg,4deg);}
    60%{transform:scale(1) skew(0,0);}
    64%{transform:skew(3deg,3deg);}
    68%{transform:skew(0,0);}
    75%{transform:skew(2deg,2deg);}
    83%{transform:skew(0,0);}
    92%{transform:skew(1deg,1deg);}
    100%{transform:skew(0,0);}
}
</style>
</head>
<body>
<h1>文字落下2s内趋于平稳：</h1>
<div>CSS3 Animations</div>
</body>
</html>

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