/*pseudo classe */			
	a:link{ text-decoration:none; color:white; }
	a:visited{text-decoration:none; color:white;}
	a:hover{text-decoration:none; color:white;}
 
* {	-moz-box-sizing: border-box;
	-webkit-box-sizing: border-box;
	box-sizing: border-box;
} 																		
		
* { color:#FFFFFF;}
	
	/*class con . */
	.tbianco{color:#FFFFFF;}
	.tnero{color:#000000;}
	.blocco{position:fixed;}
	.invisibile{display:none;}
	

	/*id con #  è più importante di class e dei vari elementi */
	
	#header,#footer,#nav	{	padding:10px;
								font-size:22px;
	}
	
	#header		{	position:fixed;
					width:960px;	
					max-width:100%;
					background-color:#1E1E1E;
					z-index:3;


	}
	
	#nav		{	max-width:100%;
					position:fixed;
					top:18px;
					left:auto;
					z-index:3;

			
	}
	
	#footer		{	position:relative;
					left:0px;
					background-color:#1E1E1E;
					width:100%;
					z-index:1;
	}
	#section	{	height:100%;
					width:100%;
					z-index:2;

	}
	
	#content 	{	padding:0px;
					position:relative;
					margin:0px auto;
					max-width:960px;
					font-size:1em;
					background-image:url('../images/sfondo.jpg');
					background-repeat:no-repeat;
					background-attachment:fixed;
					background-size:cover;
	}
	
	



	html,body { font-family:  sans-serif ; 
				width:100%;
				height:100%;
				background-color:#1E1E1E;				
	}
	
	body {	height:100%;
			margin:0px ;
			font-size:100%;
	}
	
	img {	position:relative;
			max-width:100%;
	}
	
	h1	{	text-align:center;
	}
	ul	{	width:100%;
	}
	nav { 	text-align:center;