In the past, the checkout process looked a little different from the rest of your website and your customers would no longer see your site design. Well, not anymore!
Now when your customers go to pay for their order, they won’t notice any difference between the rest of your site and the checkout process. All the forms for completing an order have now been embedded within your pages – so your branding is consistent all the way through.
The only time your customers will see a difference during the checkout process is if they are paying through PayPal Standard. They will still need to complete the transaction on the PayPal website.