.vb-gridWrapper {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: stretch;
}

.vb-gridBlock {
  display: flex;

  > * {
    // 直下の要素だけflex-growする = ボックスの高さがピッタリになる
    flex-grow: 1;
  }

  $vbGridBlockInterval: 1.5rem;

  &--oneThird {
    flex-basis: calc((100% - #{$vbGridBlockInterval} * 2) / 3);
  }

  &--twoThirds {
    flex-basis: calc(
      (100% - #{$vbGridBlockInterval} * 2) / 3 * 2 + #{$vbGridBlockInterval}
    );
  }

  &--half {
    flex-basis: calc((100% - #{$vbGridBlockInterval}) / 2);
  }

  &--oneQuarter {
    flex-basis: calc((100% - #{$vbGridBlockInterval} * 3) / 4);
  }

  &--threeQuarters {
    flex-basis: calc(
      (100% - #{$vbGridBlockInterval} * 3) / 4 * 3 + #{$vbGridBlockInterval} * 2
    );
  }
}