body {
	margin: 0;
	background-color: Azure;
}

h1 {
  color: navy;
  text-align: center;
  margin-left: 20px;
}

#nav {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

li {
	float: left;
}

li a {
	display: block;
	color: white;
 	text-align: center;
	padding: 14px 16px;
	text-decoration: none;
}

/* Change the link color on hover */
li a:hover {
	background-color: gray;
	color: black;
}

#active a {
  background-color: DarkBlue;
  color: white;
}


main {
	max-width: 800px ;
	margin: auto ;
}


main > article {
	background: FloralWhite ;
	margin-bottom: 0 ;
	padding: 1em ;
	border-color: #333 ;
	border-width: 0.75em 0.75em 0.75em 0.75em ;
	border-style: solid ;
	border-radius: 10px ;
	margin: auto ;
}

main > article > table {
	margin: auto;
	width: 50%;
}