Still not working
Although our client can see the large image centre aligned in the sample gallery page, the images are centre aligned:-
However when he examines our page using the same gallery style (the only element we've changed in the stylesheet is the background colour to match with his website). Unfortunately he has again told us that "There is an outline box centred but the image is still over to the right, although a bit less so than before."
As we have not changed anything else, what could be making the large image right aligned, could the alignment be affected by the size of the uploaded image?