I have a problem in latest Firefox browser version 34 (system: Windows 7, screen width: 1600px). I made effect with zooming images (in some container) after hov
On the link that you provided, http://demo.qodeinteractive.com/bridge/ , if you actually go here: http://demo.qodeinteractive.com/bridge/portfolio/gallery-style-condensed/two-columns-grid/ , you can see that, once looking at dev tools, that they apply a margin of "1px" on left/right side
.projects_holder.hover_text.no_space article .image img {
margin: 0 1px;
}
If you disable that style, you'll see the image move as you're describing when hovering on the image.
Therefore, your CSS for the image should be:
figure img {
width: 100%;
transform: scale(1);
transition: transform 0.3s ease-in-out;
display: block; /* (or inline-block) */
margin: 0 1px;
}