.product-description--truncatable {
  position: relative;
}

.product-description__read-more {
  position: absolute;
  bottom: 0;
  right: 0;
  white-space: nowrap;
  cursor: pointer;
  background: var(--desc-read-more-bg, white);
  padding-left: 0.5em;
  z-index: 1;
}

.product-description__read-more::before {
  content: '';
  position: absolute;
  right: 100%;
  top: 0;
  bottom: 0;
  width: 150px;
  background: linear-gradient(to right, transparent, var(--desc-read-more-bg, white));
  pointer-events: none;
}