body {
	background:#FFFFFA;
}

header {
	width:100%;
}

header nav {
	background:#024959;
	width:220px;
	left:-100%;
	margin:0;
	position: fixed;
	top:120px;
	z-index:1;
}

.menu_bar {
	display:block;
	float:left;
	width:100px;
	font-family:helvetica;
	margin-left:10px;
}
.menu_bar .bt-menu {
	display:block;
	text-decoration:none;
	font-weight: bold;
	font-size:20px;
	-webkit-box-sizing:border-box;
	-moz-box-sizing:border-box;
	box-sizing:border-box;
	margin-top:9px;
}
.menu_bar box-icon {
	float:left;
	margin-top:-10px;
	font-size:60px;
	font-weight: bold;
}

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

header nav ul li {
	display:block;
	float:left;
	border-bottom:1px solid rgba(255,255,255, .3);
	width:220px;
}

header nav ul li a {
	color:#fff;
	padding:12px;
	display:block;
	text-decoration:none;
	font-family:helvetica;
	font-size:15px;
}

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

header nav ul li a:hover {
	background:#037E8C;
	color:#000;
}

section {
	padding:20px;
}

@media screen and (max-device-width: 400px) {
.menu_bar {
	width:80px;
}
.menu_bar .bt-menu {
	font-size:1.6em;
	margin-top:0px;
}
.menu_bar span {
	font-size:1.6em;
}
header nav {
	width:55%;
	margin-top:75px;
}
header nav ul li a {
	font-size:2em;
	padding:20px;
}
}