Styling changes on the codeigniter framework for a page

Please see attached document which clearly describes project.

Styling changes on the codeigniter framework for a page
You will have to know the Codeigniter Framework
Go to this page
https://olivialo.love/CMS/user/pay_now
You can find the files for this here:
application\views\themes\default\User\pay_now.php
Now please duplicate this functionality and make
https://olivialo.love/CMS/user/pay_nowNEW
Now remove the sidebar and header and style it like this so that I can embed this with an iframe here:
https://olivialo.love/

The reason is I want to keep the home page and the blog page separate from the CRM system but that paypal system only works within the framework.
Ask if you have any questions.