修改下单成功后提示页面

app/design/frontend/Joshine/breeze/Magento_Checkout/templates/success.phtml

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+?>
+<?php /** @var $block \Magento\Checkout\Block\Onepage\Success */ ?>
+<div class="checkout-success">
+    <?php if ($block->getOrderId()) :?>
+        <?php if ($block->getCanViewOrder()) :?>
+            <p><?= $block->escapeHtml(__('Your order number is: %1.', sprintf('<a href="%s" class="order-number"><strong>%s</strong></a>', $block->escapeUrl($block->getViewOrderUrl()), $block->getOrderId())), ['a', 'strong']) ?></p>
+        <?php  else :?>
+            <p><?= $block->escapeHtml(__('Your order # is: <span>%1</span>.', $block->getOrderId()), ['span']) ?></p>
+        <?php endif;?>
+            <p><?= $block->escapeHtml(__('We\'ll email you an order confirmation with details and tracking info.')) ?></p>
+    <?php endif;?>
+
+    <?= $block->getAdditionalInfoHtml() ?>
+
+    <div class="actions-toolbar">
+        <div class="primary">
+            <a  style="background: #ffffff;color: blue;" class="action primary continue" href="<?= $block->escapeUrl($block->getContinueUrl()) ?>"><span><?= $block->escapeHtml(__('Continue Shopping')) ?></span></a>
+        </div>
+    </div>
+</div>

app/design/frontend/Joshine/breeze/Magento_Checkout/web/template/registration.html

+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<!-- ko foreach: getRegion('messages') -->
+    <!-- ko template: getTemplate() --><!-- /ko -->
+<!--/ko-->
+<div>
+    <!-- ko if: isFormVisible -->
+    <p data-bind="i18n: 'You can track your order status by creating an account.'"></p>
+    <p><span data-bind="i18n: 'Email Address'"></span>: <span data-bind="text: getEmailAddress()"></span></p>
+    <a  style="background: #ffffff;color: blue;" class="action primary" data-bind="attr: { href: getUrl() }">
+        <span data-bind="i18n: 'Create an Account'"></span>
+    </a>
+    <!--/ko-->
+</div>