Popup - How to Scroll when fixed layout

Hi,

I have created a pop-up form under my about page → request samples and it is working great except on smaller desktop screens it is too long and I need to turn on scrolling for the form itself, not the background behind it.

Does anyone know how I can do that?

here is my link to the website: https://preview.webflow.com/preview/1ig-print-2-3?utm_medium=preview_link&utm_source=designer&utm_content=1ig-print-2-3&preview=de43f0822336af6d9919d7803fa67609&pageId=5f6ba838f0e8654f1701e194&mode=preview

Thank you!


Here is my site Read-Only: LINK
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