.flex-masonry {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-content: space-between;
  margin-top: -0.75em;

  &.flex-masonry-columns-1 > .flex-masonry-item {
    width: 100%;
  }
  &.flex-masonry-columns-2 > .flex-masonry-item {
    width: 50%;
  }
  &.flex-masonry-columns-3 > .flex-masonry-item {
    width: 33%;
  }
  &.flex-masonry-columns-4 > .flex-masonry-item {
    width: 25%;
  }

  &.with-spacing {
    > .flex-masonry-item {
      margin-top: 0.75em;
      margin-bottom: 0.75em;
    }

    &.flex-masonry-columns-2 > .flex-masonry-item {
      width: calc(50% - 0.75em);
    }
    &.flex-masonry-columns-3 > .flex-masonry-item {
      width: calc(33% - 0.75em);
    }
    &.flex-masonry-columns-4 > .flex-masonry-item {
      width: calc(25% - 0.75em);
    }
  }
}