/*body
{
margin-left: 500px;
width: 274px;
margin-top: 245px;
height: 160px;

}
*/

a img{
display: block;
position: absolute;
border: none;
left: 50%;
top: 50%;
width: 65%;
height: 65%;
margin-left: -32%;
margin-top: -16%;
}
body:hover
{
background-image: url("../images/logo2.png");
background-attachment: fixed;
background-position: center;
background-repeat: no-repeat;
}