header nav {
	max-width:100%;
	background:#024959;
}

header nav ul {
	list-style:none;
	overflow:hidden;
}

header nav ul li {
	float: left;
}

header nav ul li span {
	margin-right:10px;
}

header nav ul li a{
	display:block;
	padding:20px;
	color:#fff;
	text-decoration:none;
}

header nav ul li a:hover {
	background:#037E8C;
}

section {
	padding:20px;
}


	header nav {
		width:80%;
		height:100%;
		margin:0;
		position: fixed;

		top:35px;
		overflow:auto;
		z-index:2048;
		display:none;
	}

	.menu_bar {
	}

	.menu_bar .bt-menu {
		display:block;
		padding:20px;
		-webkit-box-sizing:border-box;
		-moz-box-sizing:border-box;
		box-sizing:border-box;
		background:#024959;
		overflow: hidden;
		font-size:25px;
		font-weight:bold;
		color:#fff;
		text-decoration:none;
	}

	.menu_bar span {
		float:right;
		font-size:40px;
	}header nav {

	header nav ul li {
		display:block;
		float:none;
		border-bottom:1px solid rgba(255,255,255,.3);
	}

	@media screen and (max-width:800px) {
		header nav {		left:-100%;}
	}