.grid {
  padding: 1rem;
  background: #ddd;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.grid > * {
  background: coral;
  padding: .5rem;
}

.grid > .line {
	grid-column: 1 / -1;
	height: 1px;
	padding: 0;
	background: black;
}



.flex {
  padding: 1rem;
  background: #ddd;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.flex > * {
  background: limegreen;
  padding: .5rem;
  width: calc(50%  - 1.5rem);
}


.flex > .line {
	width: 100%;
	height: 1px;
	padding: 0;
	background: black;
}