body 
{
	width: 720px;
	margin-left:auto; 
	margin-right:auto;
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	font-size: 16px; 
}

h1 
{
	text-align: center;
	font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
	font-variant: small-caps; 
	font-size: 250%;
	background-color: black;
	color: white;  
}

a.header-link 
{
	color: white;
	text-decoration: none;
}

.nav
{
	display: flex;
	justify-content: space-around;
	font-size: 150%;	
	text-transform: uppercase;
}            

a.nav-link 
{
	color: black;
	text-decoration: none;
}

a.nav-link:hover
{
	font-weight: bold;
	font-style: italic;
}	

a.nav-link-current 
{
	color: green;
	text-decoration: none;
	font-weight: bold;
	font-style: italic;
}

.right  
{ 
	text-align:right; 
}

.center 
{ 
	text-align:center; 
}

footer
{
	text-align: right;
}

.flex-between
{
	display: flex;
	justify-content: space-between;
}

iframe
{
	/* 720 pixel body minus 560 pixel iframe width divided by 2 */
	margin-left: 80px;
	border: 0px;
}