.wp-block-group > .wp-block-group .wp-block-site-title > a {
  font-size: 36px;
}
.wp-block-columns .wp-block-site-title > a {
  font-size: 18px;
}
.wp-block-columns .wp-block-group > .wp-block-heading {
  font-size: 18px;
}