.col-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
  margin: 1.5rem 0;
}
.col iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}
@media (max-width: 700px) {
  .col-row { grid-template-columns: 1fr; }
}