.product-grid .item-box::after {
  border: 40px solid transparent;
  border-top: 40px solid #f3cc2e;
  border-right: 40px solid #f3cc2e;
  position: absolute;
  z-index: 10;
  top: 0;
  right: 0;
  content: '';
}

.product-box-reward-points {
  position: absolute;
  top: 10px;
  right: 5px;
  z-index: 11;
  transform: rotate(45deg);
  text-align: center;
  font-size: 0.8em;
}

.product-reward-points .reward-points-value {
  text-transform: none;
  color: #909090;
}

  .product-reward-points .reward-points-value span {
    color: #f3cc2e;
  }