body {
	margin: 0px;
	padding:0;
    background: #c9dee1;
    text-align: center;
}
main {
	width: 600px;
	height: 600px;
}
*{
	padding: 0;
	margin: 0;
}
nav {
	background-color: #126f7e;
	height: 50px;
}
nav ul {
	height: 50px;
	width: 600px;
	margin: 0 auto;
}
nav ul li {
    list-style-type: none;
    width: 150px;
    float: left;
	text-align: center;
}
li a {
    text-decoration: none;
    color: white;
	line-height: 50px;
	display: block;
	font-size: 20px;
		font-family: 'Open Sans', sans-serif;
font-family: 'PT Sans', sans-serif;
}
li a:hover {
	background-color: white;
	color: #81a0a3;
}
@media(max-width:959px) {
	main {
	width: 100%;
}