@block grid-list {
display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin: 0 calc(var(--grid-gutter) / 2 * -1);

  @element item {
    box-sizing: border-box;
    margin: 0 calc(var(--grid-gutter) / 2) var(--grid-gutter);
    flex: 0 0 calc(50% - var(--grid-gutter));
  }
}