Responsive Spline Element does not cover full screen?

[Gabe-Vince]

Hey there

I am currently trying to integrate my spline design into a Next.js project but when I add it into my page. It only shows up at the top of the page like so:

I tried wrapping it in a div that occupies the full height of screen but still displays in the same position.

Any help would be appreciated
Mr Biskit