.column_author {
    text-align:center;
    width:80px;
}

.column_date {
    width:200px;
}

.column_type {
    text-align:left;
    width:100%;
}

.column_type {
    text-align:center;
    width:80px;
}

.dark {
    background-color:#aaaaaa;
}

.darker {
    background-color:#999999;
}