.grid-example-1 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  background: #e9ecef;
  padding: 20px;
  border-radius: 4px;
}

.grid-item-1 {
  background: #007bff;
  color: white;
  padding: 20px;
  text-align: center;
  border-radius: 4px;
  font-weight: bold;
}

.item-span {
  grid-column: 2 / 4;
  background: #28a745;
}