read-more-toggle {
  display: block;
}
read-more-toggle [read-more-short] {
  --read-more-fade: 4em;
  -webkit-mask-image: linear-gradient(180deg, rgb(0, 0, 0) calc(100% - var(--read-more-fade)), rgba(0, 0, 0, 0) 100%);
  mask-image: linear-gradient(180deg, rgb(0, 0, 0) calc(100% - var(--read-more-fade)), rgba(0, 0, 0, 0) 100%);
}
read-more-toggle .btn--tertiary {
  margin-block-start: 0.375rem;
}