Souke/backend/web/sass/support/_view.scss

.ticket-view {

  .table {
    tr:first-child td {
       border-top: 0px none;
    }
  }

  .timeline {
    &::before {
      background: transparent none;
    }

    li, .timeline-item {
      margin-right: 0px;
    }
  }
}