.product-copy .promotion-period {
  color: #68766d;
  display: block;
  font-size: 10px;
  font-weight: 600;
  line-height: 1.45;
  margin-top: 7px;
}

@media (width <= 560px) {
  .product-copy .promotion-period {
    font-size: 9px;
  }
}