Add all Amex offers to credit card

add-amex-offers.js

const offerButtons = Array.from(document.getElementsByClassName("btn btn-sm btn-fluid offer-cta btn-secondary"))
                          .filter(btn => btn.title == "Add to Card");

const offerMerchants = Array.from(document.getElementsByClassName("offer-info offer-column margin-b-md-down col-md-5"))
                            .map((offerInfo) =>  offerInfo.lastChild.innerHTML);

for (let index = 0; index < offerButtons.length; ++index) {
  setTimeout(() => {
    console.log(`Clicking offer button for ${offerMerchants[index]}`);
    offerButtons[index].click()
  }, Math.floor(Math.random() * 3000) + 2000 * index, index);
}