magento-test/app/code/Magento/Paypal/view/frontend/templates/payflowadvanced/info.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

/**
 * @var \Magento\Paypal\Block\Payflow\Advanced\Form $block
 * @var \Magento\Framework\View\Helper\SecureHtmlRenderer $secureRenderer
 */
?>
<fieldset id="payment_form_<?= $block->escapeHtml($block->getMethodCode()) ?>"
          class="fieldset payflowadvanced items redirect">
    <div>
        <?= $block->escapeHtml(__('You will be required to enter your payment details after you place an order.')) ?>
    </div>
</fieldset>
<?= /* @noEscape */ $secureRenderer->renderStyleAsTag(
    'display:none',
    'fieldset#payment_form_' . $block->escapeHtml($block->getMethodCode())
) ?>