body { line-height: 140%; 
       margin:0; border:0; padding:0
}

div#centerpage
{  margin-left: auto; margin-right: auto; 
   width: 80%;
   border: 2px solid darkblue; 
   border-radius: 16px;
   overflow-x: hidden;
}

header.banner { background-color: #bcd; }

header.banner > section.logo
{  font-size: xx-large;
   font-weight: bold;
   height: 60px;
   padding-top: 30px;
}

header.banner > nav 
{  background-color: darkblue; 
   padding-left: 2em;        
   white-space: nowrap
}

header.banner > nav a:link,
header.banner > nav a:visited
{  text-decoration: none;  
   color: white;
   margin-right: 60px;
}

header.banner > nav a:hover
{  text-decoration: underline; }


section#main
{  overflow: hidden;
   background-color: #def;
}

section#main > article 
{  float: left;
   width: 69%; 
   background-color: #fed;
   padding-left: 2em;
}

section#main > aside 
{  float: left; padding-left: 1em; }