html {
	margin: 0;
}

body {
	background-color: #FFFFFF;
	background-image: url('obrazky/bg.jpg');
	background-size: 100%;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	margin: 0;
	width: 100%;
}
header {
	opacity: 0.5;
	background-color: #000000;
	padding: 0 1%;
	height: 80px;
}
nav {
	opacity: 0.7;
	text-align: right;
	background-color: #FFFFFF;
	border-bottom: 1px solid #003399;
	padding: 0.5em 1% 0 1%;
	height: 1.5em;
}
footer {
	opacity: 0.7;
	color: #000000;
	text-align: center;
	font-size: 30px;
	border-top: 1px solid #000000;
	background-color: #FFFFFF;
	clear: both;
	width: 100%;
	height: 6%;
}
a {
	color: #003399;
}
a:hover, a:focus {
	background-color: #CADBFF;
}
header h1 {
	color: #FFFFFF;
	font-size: 3em;
	font-family: Arial, Helvetica, sans-serif;
	text-align: right;
}
nav a {
	text-decoration: none;
	font-weight: bold;
	color: #003399;
	padding: 0 1em;
}
h1, footer p {
	margin: 0;
}
section article{
	width: 50%;
	text-align: left;
	padding-left: 25%;
}
section {
	text-align: center;
	align-items: center;
	opacity: 0.7;
	background-color: #FFFFFF;
	padding: 1%;
}