CMS Masonry Grid_Issue on Firefox

Design help General
1

Hi there, I’ve been doing the website for my architecture studio, and for the projects section we wanted to do a Pinterest like Masonry Grid with the CMS projects.
It works great on Chrome, but on Firefox it stacks the item vertically

Captura de ecrã 2020-05-19, às 12.38.41
Captura de ecrã 2020-05-19, às 12.38.412880×1394 764 KB
Captura de ecrã 2020-05-19, às 12.38.32
Captura de ecrã 2020-05-19, às 12.38.322876×1422 280 KB
.
Does anyone know how to fix this?

Here’s my read-only link Webflow - ateliermob | trabalhar com os 99%
And it’s already live for some user testing if you rather check it here https://www.workingwiththe99.com/projectos

Thanks!
Rita

Here is my site Read-Only: LINK
(how to share your site Read-Only link)