body {
	background-color: black;
	color:silver;
}
a { color: red }
a:visited { color: red }
a:hover { color: green}
.center {
	display: block;
	margin-left: auto;
	margin-right:auto;
}
nav{
	padding: 0px;
	display: flex;
}
ul {
	margin: 0px;
}
li {
	list-style: none;
	display: inline;
	margin-right: 0.2rem;
}