项目中经常有用到动画效果，比如Loading、风车转动等等。最简单的办法是使用gif，但是gif在半透明背景下有白边，体验不友好，好在现在可以使用css3的anmiation来实现动画效果，极大的提升了用户体验。下面是风车转动效果实现demo
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>风车 - css3动画示例</title>
<style type="text/css">
.windmill {
width: 110px;
height: 160px;
overflow: hidden;
background: url(http://115.29.225.190/fiddle/css3/windmill.png) no-repeat;
-webkit-backface-visibility: hidden;
-webkit-perspective: 1000;
webkit-transform: translate3d(0,0,0);
transform: translate3d(0,0,0);
-webkit-animation: earthDay 2.5s linear infinite;
animation: earthDay 2.5s linear infinite;
}
@keyframes earthDay {
7.99% {
background-position: 0 0;
}
8% {
background-position: 0 -160px;
}
15.99% {
background-position: 0 -160px;
}
16% {
background-position: 0 -320px;
}
23.99% {
background-position: 0 -320px;
}
24% {
background-position: 0 -480px;
}
31.99% {
background-position: 0 -480px;
}
32% {
background-position: 0 -640px;
}
39.99% {
background-position: 0 -640px;
}
40% {
background-position: 0 -800px;
}
47.99% {
background-position: 0 -800px;
}
48% {
background-position: 0 -960px;
}
55.99% {
background-position: 0 -960px;
}
56% {
background-position: 0 -1120px;
}
63.99% {
background-position: 0 -1120px;
}
64% {
background-position: 0 -1280px;
}
71.99% {
background-position: 0 -1280px;
}
72% {
background-position: 0 -1440px;
}
79.99% {
background-position: 0 -1440px;
}
80% {
background-position: 0 -1600px;
}
87.99% {
background-position: 0 -1600px;
}
88% {
background-position: 0 -1760px;
}
99.99% {
background-position: 0 -1760px;
}
100% {
background-position: 0 -160px;
}
}
@-webkit-keyframes earthDay {
7.99% {
background-position: 0 0;
}
8% {
background-position: 0 -160px;
}
15.99% {
background-position: 0 -160px;
}
16% {
background-position: 0 -320px;
}
23.99% {
background-position: 0 -320px;
}
24% {
background-position: 0 -480px;
}
31.99% {
background-position: 0 -480px;
}
32% {
background-position: 0 -640px;
}
39.99% {
background-position: 0 -640px;
}
40% {
background-position: 0 -800px;
}
47.99% {
background-position: 0 -800px;
}
48% {
background-position: 0 -960px;
}
55.99% {
background-position: 0 -960px;
}
56% {
background-position: 0 -1120px;
}
63.99% {
background-position: 0 -1120px;
}
64% {
background-position: 0 -1280px;
}
71.99% {
background-position: 0 -1280px;
}
72% {
background-position: 0 -1440px;
}
79.99% {
background-position: 0 -1440px;
}
80% {
background-position: 0 -1600px;
}
87.99% {
background-position: 0 -1600px;
}
88% {
background-position: 0 -1760px;
}
99.99% {
background-position: 0 -1760px;
}
100% {
background-position: 0 -160px;
}
}
</style>
</head>
<body>
<div class="windmill"> </div>
</body>
</html>
css3 Animation目前浏览器的支持情况：
IE10+
FF31+
Chrome31 - 42支持带-webkit-前缀的，Chrome43+支持标准
Safari7 - 8 支持带-webkit-前缀的
Opera28 - 29支持带-webkit-前缀的，Opera30+支持
iOS Safari7.1 - 8.3支持带-webkit-前缀的