body { 
	margin: 0;
	padding: 0;
	
    display:    ".hhh."
                ".nnn."
                ".ocp."
                ".fff."
    * 100px minmax(500px,800px) 12em *
    ;
	width: 100%;
	background: #DDF;   
}

#header { position: h; text-align: center; }

#content { 
	position: c;
	margin: .5em;
}

#nav1 { 
	position: n;
	background: #AAD;
	margin: 0;
	padding: .5em;
}

#nav1 li { 
	display: inline;
	margin: 0 20px;
}


body::slot(o) {
	background: #FDD;
}
body::slot(p) {
	background: #DFD;
	vertical-align: middle;
}

#nav2 { position: o }

#nav3 { 
	position: p;
	text-align: center;
}

#footer { 
	position: f; 
	text-align: center;
	font-weight: bold;
}

#header, #footer {
	background: #CCE;
}

#figure p {
	float: right;
	width: 150px;
	height: 200px;
	margin: .5em;
	padding: .5em;
	background: #000;
	color: white;
}