案例：CSS3 案例     状态：可编辑再运行    进入竖版
 运行结果　
​x
 
1
<!DOCTYPE html>
2
<html>
3
<head>
4
<style>
5
div
6
{
7
width:100px;
8
height:100px;
9
background:red;
10
position:relative;
11
animation:mymove 5s infinite;
12
-moz-animation:mymove 5s infinite; /* Firefox */
13
-webkit-animation:mymove 5s infinite; /* Safari and Chrome */
14
-o-animation:mymove 5s infinite; /* Opera */
15
}
16
​
17
@keyframes mymove
18
{
19
0%   {top:0px;}
20
25%  {top:200px;}
21
75%  {top:50px}
22
100% {top:100px;}
23
}
24
​
25
@-moz-keyframes mymove /* Firefox */
26
{
27
0%   {top:0px;}
28
25%  {top:200px;}
29
75%  {top:50px}
30
100% {top:100px;}
31
}
32
​
33
@-webkit-keyframes mymove /* Safari and Chrome */
34
{
35
0%   {top:0px;}
36
25%  {top:200px;}
37
75%  {top:50px}
38
100% {top:100px;}
39
}
40
​
41
@-o-keyframes mymove /* Opera */
42
{
43
0%   {top:0px;}
44
25%  {top:200px;}
45
75%  {top:50px}
46
100% {top:100px;}
47
}
48
</style>