@media only screen and (max-width: 760px) {
  .ocultar_td {
    display: none !important;
  }

  .mostrar_td{
    display: table-cell !important;
  }

  .mostrar_tr{
    display: table-row !important;
  }
}

.mostrar_td, .mostrar_tr{
  display: none;
}