.wp-block-list.is-style-two-columns {
  columns: 2;
  column-gap: 3rem;
}

.wp-block-list.is-style-two-columns > li {
  break-inside: avoid;
}

@media (max-width: 600px) {
  .wp-block-list.is-style-two-columns {
    columns: 1;
  }
}