Adding custom HTML/CSS to checkout pages

[CnP.Support]

Good day!

The pages are fixed and cannot be modified as you are asking.

The only solution is to use the FaaS or the API platform. Our clients build those pages easily using the FaaS processor.

Hope that has answered your question.

[CJGibson]

Is it possible to add custom code (HTML/CSS) to the checkout pages in Click & Pledge? We'd like to ideally have our pages appear within the same framework of a page as the rest of our website. I'm comfortable building that in HTML and CSS, however I don't see how or where it might be possible to put this into the checkout pages.

Or is this sort of thing only possible using the API?