h1 {color: blue}
html {background: #90EEE6}
body {
	width: 800px;
	margin: 30px auto;
	background: white;
	border: 1px solid;
	padding: 20px;
	}
nav {
	text-align:center;
	margin-bottom: 20px;
	}
	
nav a {
    text-decoration: none;
    display: inline-block;
    background: red;
    color:	white;
    margin: 0 10px;
    padding: 5px 10px;
    font: bold 15px Arial;
    }
    
nav a: hover {background: #E9E21C;}