.zoom{
    margin: 50px 0px;
    transition: transform .2s;    
}

.zoom:hover {
    -ms-transform: scale(1.005); /* IE 9 */
    -webkit-transform: scale(1.005); /* Safari 3-8 */
    transform: scale(1.005);
    box-shadow: 10px 10px 15px #aaaaaa;
  }