iframe scrolling="no"

Hi all,

I am trying to embed a MS Forms and I get 2 scroll bars. I've tried adding scrolling=no to attribute but the scroll bar still appears (in addition to browser's scroll bar) 

<iframe width="100%" height= "100%" scrolling="no" 
src= "https://...&embed=true" 
frameborder= "0" marginwidth= "0" marginheight= "0" style= "overflow:hidden; border: none; max-width:100%; max-height:100vh" scrolling="no" 
allowfullscreen webkitallowfullscreen mozallowfullscreen msallowfullscreen> </iframe>

I've changed height to 100% from 1000px (which was in original code) and the form looks like attached. So I changed it back to height 1000px, the form shows but even with scrolling="no", I get 2 scroll bars in browsers.

Thanks