Filtering messing with transitions

Hi there,

So I installed this plugin in the salient theme.
And after some restyling of elements my filtering is all messed up most of the time.

It might be that I edited something that won’t change but I have no idea what.

You can have a look here:
https://development.redactiepartners.nl/portfolio/

Thanks in advance.

https://wordpress.org/plugins/nimble-portfolio/