.group_head{
    font-weight: bold;
}
.group_head{
    cursor: pointer;
}

.disp_group0{
    background-color: #FDF8EF
}
.disp_group1{
    background-color: #CCC1A7
}
.disp_group2{
    background-color: #EEE9E1
}
#main_table_length{
    padding-top: 1em;
}