Style.css - Riga 140 da
codice:
#mainmenu li {
    float: left;
    list-style: none outside none;
    padding-bottom: 50px;
    padding-right: 20px;


}
diventa
codice:
#mainmenu li {
    float: left;
    list-style: none outside none;
    /* padding-bottom: 50px; */ 
    padding-right: 20px;


}
Style.css - Riga 161 da
codice:
#mainmenu li a:hover, .corrente {
    border-bottom: 2px solid #219FD1;
    color: #219FD1;
    padding-bottom: 50px;
    padding-top: 20px;


}
diventa
codice:
#mainmenu li a:hover, .corrente {
    border-bottom: 2px solid #219FD1;
    color: #219FD1;
    /*padding-bottom: 50px;
    padding-top: 20px;*/


}
Fammi sapere.