body {
	 background-image: url(sfondonew.jpg);
     background-repeat: no-repeat;
     background-position: center 55px;
	 font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	 font-size: 12px;
	 background-attachment:fixed;
	 
	}
	
#div_centrale {

					width: 745px;
					margin-left: auto ;
  				    margin-right: auto ;

					 
				  }