Stuck with css lightbox


I want to have a lightbox gallery on this page but can’t seem to get it to work right. I have followed all the instructions from this site but when you click on the image, it seems to have to much border.

if you click on the image 1 link, you will see what I mean.

I basically want it to work like this

this on opens in its own little box, whereas mine has a huge white background, going the length of the screen.

Any ideas?