Change border radius on page load

I would like my preloader to go from 95 vw and 95 vh and 20 px border radius to: 100vw and 100vh and 0px border radius.

I can’t seem to figure out how to change the border radius? Do anyone know how I would be able to achieve this with a bit of custom code if it’s not possible in webflow?

As of now I just make the section 120 vw and 120 vh to hide the border radius. It is not the right way to do it tho.

Here is my public share link: Webflow - Lukas Lang – Full site