The following CSS will make a image rotate from the center point. This will work with Chrome and Firefox and IE.

#spin{
    position:fixed;
    -webkit-animation-name: spinnerRotate;
    -webkit-animation-duration: 4s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: linear;
    -moz-animation-name: spinnerRotate;
    -moz-animation-duration: 4s;
    -moz-animation-iteration-count: infinite;
    -moz-animation-timing-function: linear;
    -ms-animation-name: spinnerRotate;
    -ms-animation-duration: 4s;
    -ms-animation-iteration-count: infinite;
    -ms-animation-timing-function: linear;
}
@-webkit-keyframes spinnerRotate
{
    from{-webkit-transform:rotate(0deg);}
    to{-webkit-transform:rotate(360deg);}
}
@-moz-keyframes spinnerRotate
{
    from{-moz-transform:rotate(0deg);}
    to{-moz-transform:rotate(360deg);}
}
@-ms-keyframes spinnerRotate
{
    from{-ms-transform:rotate(0deg);}
    to{-ms-transform:rotate(360deg);}
}

With the following HTML

<div id="spin">
<img src="yourImage.png"></img>
</div>