#main {
	max-width: 600px;
	margin: 0 auto;
}

h2 {
	text-align: center;
}

img.displayed {
	
	display: block;
	margin-left: auto;
	margin-right: auto;
}



nav {
max-width:650px;
margin:0 auto;
list-style:none;
}

p {
max-width: 650px;
}