body {
	color: white;
	font-family: sans-serif;
}

#main {
	padding:0;
	margin:auto;
	position: absolute; 
	top:0; left:0; 
	width:100%; height:100%;
	vertical-align:middle;
	min-height: 600px;

	background-image: url('background.jpg');
	background-repeat: no-repeat;
	background-size: 100%;
	background-position: center;
	background-color: grey;
}

#logo {
	background-color: black;
	
	padding: 40px;
	width: 200px;
	margin-bottom: 20px;
	
	text-align: center;
	font-size: 50px;
	font-weight: bold;
}

#nav {
	margin: 40px; 		
}

.nav_but {
	background-color: black;
	font-weight: bold;
	
	margin-bottom: 20px;
	padding: 10px;
	width: 260px;	
			
}

.nav_but:hover {
	background-color: red;
}
	
#footer {
		width: 100%;
		height: 20px;
		padding-top: 10px;		
		
		background-color: black;
		font-size: 11px;
		
		position: fixed;
		top: 100%;
		margin-top: -30px; 	
}

a {
		color: white;
		text-decoration: none;		
}