Cross Browser bug Safari & Chrome

Hey everyone

I am having trouble figuring out which piece of css safari and chrome don’t like because the ‘photos’ section of the site i’m working on will only show on firefox,

Does anyone have any suggestions as to why it’s not working?

https://www.niika-dev.com/anyway

(it’s a lot of code, and not sure where the error is, so i’ll leave it up to firebug, but feel free to request any)

Thanks for any advice guys!