html, body {
  overflow: hidden;
  margin: 0 auto;
  padding: 1% 0 0 0;
}
 
body {
  background: url(../immagini/bg.gif) repeat-x #cdcdcd;
}

#main {
  width: 748px;
  height: 561px;
  border: 1px solid #343434;
  margin: 0 auto;
}	

#main img {
  width: 748px;
  height: 561px;
}