body {
	font-family: system-ui, sans-serif;
	font-size: 100%;
	line-height: 1.5;
}

header {
background-color: #674474;
height: 50vh;
}

h1 {margin-top: 0
		padding-top: 5em;
		text-align: center;
}

main {
	margin: 0 1em 0 1em;
}

h1,h2 {
	outline: 1px solid gray;
	text-align: center;
}

header ul{
	list-style: none;
	/outline: 1px dotted red;*/
	padding-left: 0;
	text-align: center;
	padding-top: calc(50vh - 16em);
}

header li{
	outline: 1px dashed green;
	display: inline;
	margin: 2em;
}

header li:first-child {
	margin-left: 0em;
}


	
ul.nav a {text-decoration: none;}
ul.nav a:hover {color: silver;background-color: gray;}
ul.nav a:link	{color: green;}
ul.nav a:visited {color: black;}
ul.nav a:active {}