Insert the thank-you page widget with the custom layout style, not the default.
Archives
Add the standard order-received/thank-you content block to this checkout thank-you page.
Place the order confirmation section right below the page header.
Add the thank-you block and center-align its text.
Add the order thank-you/confirmation block to this page.
Add the default thank-you block for the order confirmation page.
Insert the thank-you page content using the custom layout style.
Add the order confirmation block and give it some extra top and bottom spacing.
Add the thank-you block at the end of this section, after the other content.
Place the order confirmation content at the top of this container.