[data-cart-add-error] {
  width: 100%;
  margin: 8px 0;
  font-size: 14px;
  line-height: 1.4;
}

.product__sticky-atc {
  flex-wrap: wrap;
}

.product__sticky-atc > [data-cart-add-error] {
  flex: 0 0 100%;
}