.thumbnail1{
position: relative;

}

.thumbnail1:hover{
background-color: transparent;
}

.thumbnail1 span{ /*CSS for enlarged image*/
position:absolute;
background-color:none;
bottom:0px;
margin-left:0px;
visibility: hidden;
border:none;
color: black;
text-decoration: none;
}

.thumbnail1 span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 0px;
}

.thumbnail1:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
right: -480px;
 /*position where enlarged image should offset horizontally */
}