.wp-block-columns.is-style-columns-60 {
  max-width: 60%;
}

.wp-block-columns.is-style-columns-75 {
  max-width: 75%;
}

.wp-block-columns.stretch-columns {
  align-items: stretch;
}

.wp-block-columns.wp-block-columns.is-style-columns-60,
.wp-block-columns.wp-block-columns.is-style-columns-75 {
  justify-content: space-between;
  flex-wrap: wrap;

  & .wp-block-column {
    flex: 1 1 0px;
  }
}

@media(max-width:700px) {
  .wp-block-columns:not(.is-not-stacked-on-mobile) {
    flex-direction: column;
  }

  .wp-block-columns.is-style-columns-60,
  .wp-block-columns.is-style-columns-75 {
    max-width: 90%;
    flex-direction: column;

    & .wp-block-column {
      width: 100%;

      &:not(:first-child) {
        margin-block-start: 24px;
      }
    }
  }
}