.chamadaUnica {
  grid-column: span 3;
  grid-row: span 3;
  width: 100%;
}

@media (max-width: 1024px) {
  .chamadaUnica {
    grid-column: span 4;
  }
}

@media (max-width: 768px) {
  .chamadaUnica {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}