.header_itm_act {
    min-width: 60px;
    text-align: center;
    white-space: nowrap;
}

.header_itm_normal {
    min-width: 80px;
    text-align: center;
    white-space: nowrap;
}

.header_itm_name {
    min-width: 150px;
    text-align: center;
    white-space: nowrap;
}

.header_itm_small {
    width: 10px;
    text-align: center;
    white-space: nowrap;
}