newsupernova/vendor/magento/module-multishipping/view/frontend/templates/checkout/billing.phtml

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

/**
 * Multishipping checkout billing information
 *
 * @var $block \Magento\Multishipping\Block\Checkout\Billing
 */
?>
<div id="checkout-loader" data-role="checkout-loader" class="loading-mask" data-mage-init='{"billingLoader": {}}'>
    <div class="loader">
        <img src="<?= $block->escapeUrl($block->getViewFileUrl('images/loader-1.gif')); ?>"
             alt="<?= $block->escapeHtml(__('Loading...')); ?>"
             style="position: absolute;">
    </div>
</div>
<script>
    window.checkoutConfig = <?= /* @noEscape */ $block->getCheckoutData()->getSerializedCheckoutConfigs(); ?>;
    window.isCustomerLoggedIn = window.checkoutConfig.isCustomerLoggedIn;
    window.customerData = window.checkoutConfig.customerData;
</script>
<div id="checkout" data-bind="scope:'checkoutMessages'">
    <!-- ko template: getTemplate() --><!-- /ko -->
    <script type="text/x-magento-init">
        {
            "#checkout": {
                "Magento_Ui/js/core/app": {
                   "components": {
                        "checkoutMessages": {
                            "component": "Magento_Ui/js/view/messages",
                            "displayArea": "messages"
                        }
                    }
                }
            }
        }
    </script>
</div>
<form action="<?= $block->escapeUrl($block->getPostActionUrl()); ?>"
      method="post"
      id="multishipping-billing-form"
      class="form multicheckout billing">
    <div class="block block-billing">
        <div class="block-content">
            <div class="box box-billing-address">
                <strong class="box-title">
                    <span><?= $block->escapeHtml(__('Billing Address')); ?></span>
                    <a href="<?= $block->escapeUrl($block->getSelectAddressUrl()); ?>" class="action">
                        <span><?= $block->escapeHtml(__('Change')); ?></span>
                    </a>
                </strong>
                <div class="box-content">
                    <address>
                        <?= /* @noEscape */ $block->getCheckoutData()->getAddressHtml($block->getAddress()); ?>
                    </address>
                </div>
            </div>
            <div class="box box-billing-method">
                <fieldset class="fieldset">
                    <legend class="legend box-title">
                        <span><?= $block->escapeHtml(__('Payment Method')); ?></span>
                    </legend><br>
                    <div class="box-content">
                        <?= $block->getChildHtml('payment_methods_before') ?>
                        <?php /* Payment methods forms list */ ?>
                        <dl class="checkout-payment-method" id="payment-methods">
                            <?php
                            $methods = $block->getMethods();
                            $methodsCount = count($methods);
                            $methodsForms = $block->hasFormTemplates() ? $block->getFormTemplates(): [];

                            foreach ($methods as $_method) :
                                    $code = $_method->getCode();
                                    $checked = $block->getSelectedMethodCode() === $code;

                                if (isset($methodsForms[$code])) {
                                    $block->setMethodFormTemplate($code, $methodsForms[$code]);
                                }
                                ?>
                            <dt class="item-title">
                                <?php if ($methodsCount > 1) : ?>
                                    <input type="radio"
                                           id="p_method_<?= $block->escapeHtml($code); ?>"
                                           value="<?= $block->escapeHtml($code); ?>"
                                           name="payment[method]"
                                           title="<?= $block->escapeHtml($_method->getTitle()) ?>"
                                        <?php if ($checked) : ?>
                                           checked="checked"
                                        <?php endif; ?>
                                           class="radio"/>
                                <?php else : ?>
                                    <input type="radio"
                                           id="p_method_<?= $block->escapeHtml($code); ?>"
                                           value="<?= $block->escapeHtml($code); ?>"
                                           name="payment[method]"
                                           checked="checked"
                                           class="radio solo method" />
                                <?php endif; ?>
                                    <label for="p_method_<?= $block->escapeHtml($code); ?>">
                                        <?= $block->escapeHtml($_method->getTitle()) ?>
                                    </label>
                            </dt>
                                <?php if ($html = $block->getChildHtml('payment.method.' . $code)) : ?>
                                    <dd class="item-content <?= $checked ? '' : 'no-display'; ?>"
                                        data-bind="scope: 'payment_method_<?= $block->escapeHtml($code);?>'">
                                        <?= /* @noEscape */ $html; ?>
                                    </dd>
                                <?php endif; ?>
                            <?php endforeach; ?>
                        </dl>
                        <?= $block->getChildHtml('payment_methods_after') ?>
                        <?= $block->getChildHtml('checkout_billing_items') ?>
                    </div>
                </fieldset>
            </div>
        </div>
    </div>
    <div class="actions-toolbar">
        <div class="primary">
            <button id="payment-continue"
                    type="button"
                    class="action primary continue">
                <span><?= $block->escapeHtml(__('Go to Review Your Order')); ?></span>
            </button>
        </div>
        <div class="secondary">
            <a href="<?= $block->escapeUrl($block->getBackUrl()); ?>" class="action back">
                <span><?= $block->escapeHtml(__('Back to Shipping Information')); ?></span>
            </a>
        </div>
    </div>
</form>
<script>
    require(['jquery', 'mage/mage'], function(jQuery) {
        var addtocartForm = jQuery('#multishipping-billing-form');

        addtocartForm.mage('payment', {
            checkoutPrice: <?= (float)$block->getQuoteBaseGrandTotal() ?>
        });

        addtocartForm.mage('validation', {
            errorPlacement: function(error, element) {
                if (element.attr('data-validate') && element.attr('data-validate').indexOf('validate-cc-ukss') >= 0) {
                    element.parents('form').find('[data-validation-msg="validate-cc-ukss"]').html(error);
                } else {
                    element.after(error);
                }
            }
        });
    });
</script>