.wp-block-button.is-size-sm > * {
  padding-inline: 0.75rem;
  height: 2rem;
  font-size: var(--wp--preset--font-size--sm);
}

.wp-block-button.is-size-md > * {
  padding-inline: 1rem;
  height: 2.25rem;
  font-size: var(--wp--preset--font-size--base);
}

.wp-block-button.is-size-lg > * {
  height: 2.5rem;
  font-size: var(--wp--preset--font-size--lg);
  padding-inline: 1.5rem;
}

.wp-block-button.is-size-lg > *,
.wp-block-button.is-size-md > *,
.wp-block-button.is-size-sm > * {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}