How to do this page transition

Hi,

I was looking at the site that T.Ricks used for liquid-nav-links - Webflow
Namely https://kirschberg.co.nz/

And I really like the effect for the page transition but despite having a go, cannot work out how I could do this in Webflow.

Can anyone provide any tips?

Thanks
Pete


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