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<!doctype html>
<html>
<head>
<style>
div {
width: 400px;
height:300px;
background-color: #0080ff;
font-size:3em;
line-height:300px;
text-align: center;
color: #fff;
-webkit-animation-name: rotate;
-webkit-animation-duration:2s;
-webkit-animation-iteration-count:1;
-webkit-animation-timing-function:linear;
-ms-animation-name: rotate;
-ms-animation-duration:2s;
-ms-animation-iteration-count:1;
-ms-animation-timing-function:linear;
-moz-animation-name: rotate;
-moz-animation-duration:2s;
-moz-animation-iteration-count:1;
-moz-animation-timing-function:linear;
}
@-webkit-keyframes rotate {
from {-webkit-transform: rotate(0deg);}
to {-webkit-transform: rotate(360deg);}
}
@-ms-keyframes rotate {
from {-ms-transform: rotate(0deg);}
to {-ms-transform: rotate(360deg);}
}
@-moz-keyframes rotate {
from {-moz-transform: rotate(0deg);}
to {-moz-transform: rotate(360deg);}
}
</style>
</head>
<body>
<div>Hello, HTML5!</div>
</body>
</html>