Nice CSS box highglight on mouseover

by andfinally

HTML

<div id="example3"></div>

CSS

#example3 {
    border: solid 1px #ccc;
    width: 250px;
    height: 250px;
    margin: 50px;
    box-shadow: 5px 5px 3px -2px rgba(0, 0, 0, 0.5);
}