Where can I add in my own CSS to Sticky Buy Now Button? Norton Chris June 11, 2018 23:06 Follow To add your own custom CSS: Open the app Click Advanced Settings Enter your CSS in the Custom CSS field Save your changes Related articles The Sticky Buy Now Button bar isn't appearing How do I install Stick Buy Now Button? How do I change the color of the review stars on the Sticky Buy Now Button bar? How do I uninstall Stick Buy Now Button? I've upgraded or changed themes. How do I reinstall Sticky Buy Now Button? Comments 0 comments Article is closed for comments.