Customistaion Of A NextGen Gallery

I have a website that had a customised version of the NextGen Gallery applied so that an entire gallery was launched from a lightbox when a single thumbnail was clicked. Unfortunately, after running theme and plugin updates I have lost some of the css changes and the gallery is no longer displaying correctly. This is the initial customisation that was applied: [login to view URL] I was running a backup plugin, so perhaps you could restore the code from there? If not, attached is a screengrab of how I need it to look. A few requirements: 1. This project must be completed today. 2. It must be centered on the screen and responsive, so it resizes on ipads and mobiles. 3. When the user hovers over the thumbnail, the description disappears to reveal the image. 4. The changes must be applied so that they will not be written over when I do future Wordpress plugin and theme updates. A lot of the work has been done, it should mostly be CSS work to get it looking correctly Thanks Chris