Mouseover the image of the dental tool on this page:
and you'll see that there is a zoom effect happening right over the image.
Mouseover the same image on this page:
and you'll see the zoom image displays on the right edge of the browser window instead of directly over the dental tool image.
I've narrowed this down to bootstrap.css. If I remove it, the hover works perfectly. So, it's something in bootstrap.css but I can't narrow it down.
Any ideas what might be causing this?