.img-shadow {
   float:left;
   background: url("shadow.gif") no-repeat bottom right;
   margin: 10px 0 0 5px;
}
 
.img-shadow img {
   display: block;
   position: relative;
   background-color: #fff;
   border: 1px solid #999999;
   margin: -6px 6px 6px -6px;
   padding: 4px;
}