Add a Return Home Button in Checkout Page

Hi all, we want to add a return home button to our checkout page, so that after user landing on this page but want to add more products, they can return to the product list page/home page. We cannot figure out how to customized this page. Adding a button or even just a hyperlinked text will be sufficient. Thanks in advance for your kindness.

If you look at our website and have any suggestions for improvement, please feel free to share to. Happy to learn from experts.

The checkout page can not be modified. It is a Squarespace security feature.

If custom code was allowed credit card information could be stolen.