header{
position:fixed;
left:0px;top:0px;  
margin: 0px 0px 0px 0px; 
width:100%;height:60px;
background:#d3d3d3;
z-index:4;
} 

nav{
position:fixed;
left:0px;bottom:0px;  
margin: 0px 0px 0px 0px; 
width:100%;height:53px;
background:#d3d3d3;
font-size:14px;
font-weight:bold;
z-index:3;
} 

aside{
position:fixed;
left:0px;top:60px;  
margin: 0px 0px 0px 0px; 
width:280px;height:100%;
background:#888;
font-size:16px;
line-height:140%;
z-index:2;
} 

section{
position:fixed;
left:280px;top:60px;  
margin: 0px 0px 0px 0px; 
width:100%;height:100%;
background:#aaa;
font-size:16px;
line-height:140%;
z-index:1;
} 

a:link { color: #0868f9; }
a:visited { color: #56647a; }
a:hover { color: #09fbf8; }
a{text-decoration:none;}