.tzst-pa__pair {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.tzst-pa__validation {
  display: block;
  min-height: 1.4em;
  margin-top: 4px;
  font-size: .9em;
  font-weight: 700;
}
.tzst-pa__validation.is-error { color: #c43b3b; }
.tzst-pa__validation.is-valid { color: #52720e; }
@media (max-width: 680px) {
  .tzst-pa__pair { grid-template-columns: 1fr; }
}