#topnav li.ibc        { width: 23.5%; }
#topnav li.analysis   { width: 14.5%; }
#topnav li.database   { width: 18.5%; }
#topnav li.about      { width: 18.5%; }
#topnav li.contribute { width: 14.5%; }

#topnav li a {
    padding: 14px 0 14px 0;
    display: block;
    color: #bbb;
    text-decoration: none;
    font-family: "Trebuchet MS", "Helvetica Neue", Arial, Helvetica, Geneva, sans-serif;
    font-size: 123.1%;
    letter-spacing: .1em;
    text-align: center;
}

#topnav li.ibc a      {
    font-size: 135.4%;
    position: relative;
    top: -0.14em;
    letter-spacing: normal;
    font-weight: bold;
    text-transform: none;
}

#topnav li.selected div div { height: 4.3em; margin: 0; padding: 0; }
#topnav li div div div { height: 4.3em; margin: 0; padding: 0; }