.main_nav{
  font-family:Arial,Helvetica,sans-serif;
  font-family:verdana;
  font-size:0.9em;
  font-size:12px;
  font-weight:bold;
}

div #content{
  font-family:verdana;
  font-size:12px;
}
div #content_sub h2, #content_main h2 {
  font-size:140%;
}

h3, h4 {
  font-size:140%;
  font-weight: normal;
  margin-left:10px;
}