I apologize for a delay in my reply!
Let me clarify – you would like the pages that show individual portfolio items to have a full-screen fluid layout, is that correct? Or you’d like to keep the fixed layout and make portfolio images clickable, so that the full-size version is displayed on mouse-click?
Could you please provide the URL of your website so that I could have a closer look at the code? Thanks!
Best,
A. | Satori