Spline 3D embed not responsive in mobile view

Hi there, 

I am trying to add a Spline 3D object to my site but I am having issues making the design responsive in the mobile view. It looks cut off. 

As I am doing a test for now, the design has been added to a hidden page https://imadesignsco.squarespace.com/extrainfo

This is the code embed I am using: 

<script type="module" src="https://unpkg.com/@splinetool/viewer@1.5.0/build/spline-viewer.js"></script>
<spline-viewer url="https://prod.spline.design/7dtyrnUJnV8pfhfw/scene.splinecode"></spline-viewer>

Is there any CSS I could apply to this element to make it responsive for mobile and tablet?

Thanks!