* {
	padding:0;
	margin:0;
}

header {
	width:100%;position:absolute;z-index:600;
}

header nav {
	width:90%;
	margin:20px auto;
	max-width:1000px;
	background:#000000;
	display:nones;
}

.menu_bar {
	display:none;
}

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;
}

section {	
	margin: auto;
	max-width:940px;
	padding: 20px;
	background: #C6d5c5;
	border-bottom-left-radius: 10px;
	border-bottom-right-radius: 10px;
}

@media screen and (max-width:1100px) {
	header nav {
	display:block;
		width:270px;
		height:100%;
		margin:0;
		position: fixed;
		left:-100%;
		/*top:0px;*/
		overflow:auto;
	}

	.menu_bar {
		display:block;
		width:100%;
	}

	.menu_bar .bt-menu {
		display:block;
		padding:0px;
		-webkit-box-sizing:border-box;
		-moz-box-sizing:border-box;
		box-sizing:border-box;
		overflow: hidden;
		font-size:20px;
		font-weight:bold;
		color:#23c4fc;
		text-decoration:none;
	}

	.menu_bar span {
		float:Left;
		font-size:40px;
	}

	header nav ul li {
		display:block;
		float:none;
		border-bottom:0px solid rgba(255,255,255,.3);
	}
}