Embed Itch.io game from Twine

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1

Hi I recently upload a Twine (HTML5 interactive story) on itch.io and embed it on my Webflow project.

Everything works except the scrollbar.

Go to the Cubicle page. If you look into the BigWrapper then SubWrapper and then ItchContainer there is an embed.
The scrollbar doesn’t go all the way to reach all the content when the content goes above the height.

https://preview.webflow.com/preview/guillaumes-stunning-site-2ed241?utm_medium=preview_link&utm_source=designer&utm_content=guillaumes-stunning-site-2ed241&preview=c831b7ded792b35e03e06769466be4d8&pageId=64c7e1c1bfd0c5d5d66f4f67&workflow=preview

Thank You all