.hello-triptych {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  width: 100%;
  margin: 0;
  padding: 0;
}

.hello-panel img {
  width: 100%;
  display: block;
}

@media (max-width: 767px) {
  .hello-triptych {
    grid-template-columns: 1fr;
  }

  .hello-panel--side {
    display: none;
  }
}