div.guestnav{
  clear: both;
  width: 28em;
  margin-left:auto;
  margin-right:auto;
}
div.guestnav ul
{
  list-style-type: none;
  text-align: center;
  font-size: 125%;
  font-weight: bold;
}
div.guestnav ul li a {
  float:left;
  width: 3em;
  margin: 1;
  color: #000;
  padding: .3em 0em;
  background-color: #08F;
  border-top: 1px solid #000;
  border-left: 1px solid #000;
  border-right: 1px solid #000;
  border-bottom: 1px solid #000;
}
div.guestnav ul li a:hover
{
  background-color: #0CF;
}
li.guestnavactive
{
  width: 6em;
  float:left;
  margin: 1;
  color: #000;
  padding: .3em 0em;
  background-color: #CCC;
  border-top: 1px solid #000;
  border-left: 1px solid #000;
  border-right: 1px solid #000;
  border-bottom: 1px solid #000;
}