/* container */
.responsive-three-column-grid {
  display: block;
}

/* columns */
.responsive-three-column-grid > * {
  padding: 1rem;
  margin-bottom: 2rem;
}

/* tablet breakpoint */
@media (min-width: 768px) {
  .responsive-three-column-grid {
    display: grid;
    grid-auto-rows: 1fr;
    grid-template-columns: 1fr 1fr 1fr;
  }
}