html, body {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
}

body {
	font-family: 'Ubuntu', sans-serif;
	font-size: 18px;
}

.container {
	max-width: 1024px;
	min-width: 512px;
	margin: 0 auto;
	padding: 0 20px;
	position: relative;
}

#navigation {
	width: 100%;
	height: 50px;
	background-color: #333;
	position: fixed;
	top: 0;
	z-index: 9999;
}

#navigation a {
	float: left;
	display: block;
	color: #f2f2f2;
	text-align: center;
	padding: 15px 16px;
	text-decoration: none;
	font-size: 16px;
}

#navigation a:hover {
	background-color: #ddd;
	color: #000;
}

.active {
	background-color: #4caf50;
	color: #fff;
}

#header-page {
	margin-top: 80px;
	text-align: center;
}

section {
	margin: 25px;
	padding: 15px;
	border-bottom: 1px solid #ddd;
}

footer {
	text-align: center;
	padding-bottom: 15px;
	color: #696969;
	font-style: italic;
	font-size: 16px;
}

footer a {
	color: #487281;
	text-decoration: none;
	fill: currentColor;
}

footer a:hover {
	text-decoration: underline;
}