I tried this but it did not work. The frame just got bigger and streched over the product data. What we need is as follows:
1) Normal stage as now, no change in normal view:
(Please see image code-did-not-work.png)
2) When clicking the image, the image would be BIGGER, but only in the POP-UP mode and the biggest image would show bigger. (Please see image pop-up-image-bigger.png)
All the changes we've tried according to your instructions have changed the normal-view, which should not change, but have not changed the pop-up-image view which we do want to change.
Please advise how to get the pop-up image showing bigger!