.wp-block-quote:not(.is-style-plain) {
  background: var(--wp--preset--color--custom-light-orange);
}

.wp-block-quote:not(.is-style-plain):before {
  background-color: var(--wp--preset--color--secondary);
}

.wp-block-quote {
  font-family: inherit;
  font-size: inherit;
}