This is the text from post#77: I am not tracking the relevance since the newer version automatically copies that file to the custom template. Is there an edit to that file that has to happen?
Re: One-Page Checkout [Support Thread]
Did you copy the checkout_one.css file to your template's /css folder?
If this isn't a local installation, would you send me a PM with the site's link so that I can see what's going on myself?