@media screen and (max-width: 820px) {
  .wp-block-group.is-layout-grid {
    grid-template-columns: 1fr !important;
  }
}
@media screen and (max-width: 820px) {
  .wp-block-group > * {
    margin-left: auto !important;
    margin-right: auto !important;
  }
}
@media screen and (max-width: 820px) {
  .wp-block-group > * hr {
    margin-left: 0 !important;
  }
}