#nav {
    font-size: 0.91em;
    float: left; width: 19em;
    margin: 0em; padding: 1em;
    border: 0px dashed silver;
    background-color:#cccccc;
    min-height: 80em;
}
#cont {
    margin-left: 20em;
    padding: 0 1em;
    border: 0px dashed silver;
    min-width: 12em;
    background-color:#ffffff
}