h2{
    text-align: center;
    font-size: 14px;
    margin: 20px 0;
}
#guestbook{
    list-style: none;
    margin: 0;
    padding: 0;
}
    #guestbook li{
        padding: 20px 0 10px;
        border-top: 1px solid rgb(220,220,220);
    }
    #guestbook div{
        font-size: 14px;
    }