#purchase_bt {
    display: block;
}

#hidden_purchasing_method {
    display: none;
    text-align: center;
}

.buy_method {
    margin-right: 10px;
    margin-top: 5px;
}

#hidden_down_bt {
    display: none;
}

#hidden_starting_time_bt {
    display: none;
}

#duration_apply {
    margin-right: 3px;
}

#pdf_file {
    display: none;
}

#time_limit {
    display: none;
}