.history_container { }
    .history_container .header { margin: 0 !important; }
    .history_container .item_delta_content {
        height: calc(100vh - 13rem) !important;
    }
    .history_container .changes_content {
        height: calc(100vh - 13rem) !important;
    }
    .history_container .container_mailbox_sources {
        height: calc(100vh - 13rem) !important;
    }
    .history_container .container_processed_mailboxes {
        height: calc(100vh - 13rem) !important;
    }
    .history_container .dates_content {
        height: calc(100vh - 13rem) !important;
    }