*{
	margin: 0;
	padding: 0;
}

header {
	width: 100%;
}

header nav {
	width: 99%;
	margin: 20px auto;
	background: #2289A0;

}

.menu_bar {
	display: none;
	position: relative;
}

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

header nav ul li {
	display: inline-block;
	font-size: 18px;
}

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

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

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


header nav ul li .children {
	display:none;
	background: #011826;
	position: absolute;
	width: auto;
}

header nav ul li:hover .children {
	display:block;

    
}



footer {
	background: #024959;
	width: 99%;
	height: 40px;
	float: left;
	margin: 10px;
}

@media screen and (max-width: 800px) {
	header nav {
		width: 40%;
		height: 70%;
		left: -100%;
		margin: 0;
		position: fixed;
	}

	header nav ul li {
		display: block;
		float: none;
		border-bottom:1px solid rgba(255,255,255,0.3);
	}

	.menu_bar {
		display: block;
		width: 100%;
		background: #ccc;
	}

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

	.menu_bar span {
		float: right;
		font-size: 30px;
	}
}