.td_comment_id_info td:nth-child(1){
    background-color: #d9edf7;
}
.td_comment_id_success td:nth-child(1), .td_comment_user_success td:nth-child(3){
    background-color: #dff0d8;
}
.td_comment_id_danger td:nth-child(1){
    background-color: #f2dede;
}