If anyone happens to find this again,
I seemed to find a solution by adding this to the individual pages header as tuanphan recommended to another user a while ago
<style>
html, body {margin: 0; height: 100%; overflow: hidden}
</style>
then this in the iframe embed itself
<iframe src="https://cables.gl/view/630c2964975b8e86b85d8623"
width="100%" height="95vh" frameborder="0" scrolling="0" style="
height: 95vh;
" seamless="seamless" allowfullscreen="allowfullscreen"></iframe>