#container {
  width: 90%;
  background-color: #FFFFFF;
  margin: 10px auto;
  padding:0px;
  border: 1px solid gray;
}

#top
{
padding: .5em;
background-color: #ddd;
border-bottom: 1px solid gray;
}

#top h1
{
padding: 0;
margin: 0;
}

#leftnav
{
float: left;
width: 160px;
margin: 0;
padding: 1em;
}

#rightnav
{
float: right;
width: 160px;
margin: 0;
padding: 1em;
}