.woocommerce div.product form.cart .button.single_add_to_cart_button {
  color: #ffffff;
  background-color: #e30b21;
  font-weight: bold;
  line-height: -1px;
  font-size: -1px;
  opacity: 1;
}

.woocommerce-page.woocommerce-checkout #payment #place_order {
  background-color: #ff5e00;
}