​x
 
<!DOCTYPE html>
<html>
<head>
<style> 
div
{
width:100px;
height:100px;
background:red;
animation:myfirst 5s;
-moz-animation:myfirst 5s; /* Firefox */
-webkit-animation:myfirst 5s; /* Safari and Chrome */
-o-animation:myfirst 5s; /* Opera */
}
​
@keyframes myfirst
{
from {background:red;}
to {background:yellow;}
}
​
@-moz-keyframes myfirst /* Firefox */
{
from {background:red;}
to {background:yellow;}
}
​
@-webkit-keyframes myfirst /* Safari and Chrome */
{
from {background:red;}
to {background:yellow;}
}
​
@-o-keyframes myfirst /* Opera */
{
from {background:red;}
to {background:yellow;}
}
</style>
</head>
<body>
​
<div></div>
​
<p><b>注释：</b>本例在 Internet Explorer 中无效。</p>
​
</body>
</html>
​