<form action="/your-server-side-code" method="POST">
  <script
    src="https://checkout.stripe.com/checkout.js" class="stripe-button"
    data-key="pk_test_NioAQntbQqxbewDlZ4Idk47g"
    data-amount="999"
    data-name="Gentle Heart Animal Advocacy"
    data-description="Widget"
    data-image="https://stripe.com/img/documentation/checkout/marketplace.png"
    data-locale="auto">
  </script>
</form>