@media screen and (max-width: 600px) {
  table { width: 100% !important; }
  table tr { display: block; margin-bottom: 12px; }
  table td {
    display: block !important;
    width: 100% !important;
    box-sizing: border-box;
    border-radius: 8px !important;
    margin-bottom: 8px;
  }
}