Note: This example does not work in Internet Explorer.

Hover over the div element above, to see the transition effect.


<style type="text/css">
div
{
width:100px;
height:100px;
background:rgb(255,0,0);
background-image: url(http://www.echeverry.tv/cabaret/img/patty_01.jpg);
background-repeat: no-repeat;
background-position: top;
transition: width 2s, height 2s;
-moz-transition:width 2s, height 2s; /* Firefox 4 */
-webkit-transition:width 2s, height 2s; /* Safari and Chrome */
-o-transition:width 2s, height 2s; /* Opera */
}

div:hover
{
width: 300px;
height: 216px;
}
</style>