html {
	height:100%; 
	max-height:100%; 
	overflow:hidden; 
	padding:0; 
	margin:0; 
	border:0; 
	background:url(.././img/bgastro.jpg) #fff;  
	font-size:76%; 
	font-family:georgia, palatino linotype, times new roman, serif; 
}
#head {
	position:absolute; 
	top:0; 
	left:0; 
	display:block; 
	width:100%; 
	height:70px; 
	background-position:0 0; 
	background-repeat:no-repeat; 
	font-size:4em; 
	z-index:5; 
	color:#fff;
}
#left {
	position:absolute; 
	left:0; 
	top:70px; 
	bottom:30px; 
	width:150px; 
	font-size:1.2em; 
	z-index:4; 
	overflow:auto; 
	background-repeat:no-repeat;
}
#content {
	overflow:auto; 
	position:absolute; 
	z-index:3; 
	top:70px; 
	bottom:30px; 
	left:150px; 
	right:30px;
	background:#eee;
	border:1px solid #000; 
	-moz-border-radius:20px 20px;
	-moz-opacity:0.9; 
}
#foot {
	position:absolute; 
	bottom:0; 
	left:0; 
	display:block; 
	width:100%; 
	height:30px; 
	font-size:1em; 
	z-index:5; 
	overflow:hidden; 
	color:#fff;
}
a.nav, a.nav:visited {
	margin-left:25px; 
	display:block; 
	width:100px; 
	height:25px; 
	background:#aaa; color:#fff; 
	border:1px solid #000; 
	text-decoration:none; 
	text-align:center; 
	line-height:25px;
	-moz-border-radius:20px 20px;
}
a.nav:hover {
	background:#000; 
	color:#aaa;
	-moz-border-radius:20px 20px;	
}
a { 
	color: rgb(0,0,0);
	font-size: 12px;
	text-decoration: none;
}
a:hover { 
	color: rgb(255, 0, 0);
}
a:visited { 
	color: rgb(0, 0, 0);
}
a[hreflang]:after {
	color: black;
	font-weight: bold;
	content: "\0000a0[" attr(hreflang) "]";
}
.column { 
	float: left;
	padding-left: 30px;
}
h4 {
	height: 5px;
}