dt.volume-year{
    font-weight: 300;
    font-size:1.5rem;
    padding-left: 25px;
    cursor: pointer;
}
dt.volume-year:hover{
    text-decoration:underline;
}
dt.volume-year.opened{
    background: url('/static/img/li_minus.png') no-repeat;
    background-position-y: center;
}
dt.volume-year.closed{
    background: url('/static/img/li_plus.png') no-repeat;
    background-position-y: center;
}
dd.volume-issue{
    padding-left: 25px;
}