body {

	margin: 0px;
	padding: 0px;
	text-align: center;

}


#principale {
margin: 0px auto;
text-align: left;
width: 780px ;
background-color: #ffffff;
padding: 10px;
font-family: arial; 
font-size: 15px ;

}

.centrato {
width: 780px ;
text-align: center;

}