CMS Masonry Grid_Issue on Firefox

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

.
Does anyone know how to fix this?

Here’s my read-only link https://preview.webflow.com/preview/mob-web-0eb4fb?utm_medium=preview_link&utm_source=designer&utm_content=mob-web-0eb4fb&preview=12762f8766447e87e0fd1850853d97d0&pageId=5e85a2ce8a971311a8fe2b31&mode=preview
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)