Sorry for late reply. I’ve been check your site in there and may i know if you’re referring this page right http://interior-design.moscow/? I just want to make sure.
If so, i’ve been check the portfolio block element and i think it’s just works fine on my side. Please take a look on this attached video url below :
If this is not the problem that you mean on above, can you help me to guide me to tell more detail about the problem that you have in there so i can easily to help you out.