div.demo 
{ 
	float: left; width: 4em; padding: 20px; margin: 1em;
	
	background: #ffffff; color:#000; text-align: center; font: verdana, arial, sans-serif;
}
div.fun  { margin: 0px; }
.gallerycontainer{
position: relative;
/*Add a height attribute and set to largest image's height to prevent overlaying*/
}

.thumbnail img{
border: 1px solid #cccccc;

margin: 0 0px 0px 0;
}

.thumbnail:hover{
background-color: transparent;

}

.thumbnail:hover img{
border: 1px solid #CCCCCC;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: #ffffff;
padding: 0px;
left: -250px;
top : -240px;
border: 1px solid black;
visibility: hidden;
color: black;
text-decoration: none;
}

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

}