Box Sizing causes large image to overlap borderBrowser Info Environment
One thing, many responsive themes use box-sizing:border-box;
This messes with your gallery, you may want to explicitly disable this on elements beneath your parent class. Easy fix, but I thought it might be a common enough issue that it'd be worth sharing.
I do not see any issues with box-sizing when using my responsive themes?
I suppose it might depend how the border-box is being implemented with other frameworks, i.e. Foundation - Bootstrap.