body, html{
/*background:#ddf;*/
background:#ddd;
padding:0;
margin:0;
text-align:center;
/*overflow:hidden;*/
height:100%;
}
#mainContainer{
position:relative;
}
.menu{
color:#766;
width:600px;
margin:100px auto 0 auto;
padding:0;
font:28px sans;
position:relative;
}
.menu div{
position:absolute;
width: 150px;
height:150px;
background:white;
border:4px solid #ccc;
line-height:150px;
cursor:pointer;
}