<style type="text/css">

.centered 
{
text-align: left;
margin-left: auto; 
margin-right: auto;
}

table.3by3
{
width: 100%;
background-color: #000032;
border: 0px;
border-collapse: collapse;
border-spacing: 0px; 
}

table.centered
{
table-layout: fixed;
margin-left: 15%; 
margin-right: 15%; 
text-align: center;
table-layout: fixed;
border-style: none;
border-spacing: 5 px;
width: 70%;
height: 50%;
}

.sample3by3
{
position: relative;
}

.thumbnail img{
border: 1px solid white;
margin: 0 0 0 0;
}

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

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


.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightyellow;
padding: 5px;
left: -1000px;
border: 1px dashed gray;
visibility: hidden;
color: black;
text-decoration: none;
}

.thumbnail span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 1px;
}

.thumbnail:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: -450px;
left: 300px; /*position where enlarged image should offset horizontally */
z-index: 50;
}