.shadow {
-webkit-box-shadow: 3px 3px 5px 6px #ccc; /* Safari 3-4, iOS 4.0.2 - 4.2, Android 2.3+ */
-moz-box-shadow: 3px 3px 5px 6px #ccc; /* Firefox 3.5 - 3.6 */
box-shadow: 3px 3px 5px 6px #ccc; /* Opera 10.5, IE 9, Firefox 4+, Chrome 6+, iOS 5 */
}
box-shadow: [horizontal offset] [vertical offset] [blur radius] [optional spread radius] [color];