disabling scrolling for the whole page when scrolling in an iframe - html

I've got an iframe on my page linking to another page. That one contains a div with a fixed height and overflow:scroll, which works just fine--but when I keep scrolling with the mouse or pad, it scrolls down to the end of the div and then starts to scroll the page--which is annoying.
How can I disable full page scrolling when the mouse is hovering over that div/ the whole iframe?
Thanks!

You can set body {position:fixed} when hovering and then return that to body {position: static;}

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