html{
height: 100%;
}
body {
font:100% Verdana, Tahoma, Arial, Helvetica, sans-serif;
text-align:center;
background: #000;
color: #FFF;
height: 100%;
margin: 0;
padding: 0;
}
#big{
height: 100%;
}
#centrato{
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}