How to apply css on external website content in iframe

Question

I have a iframe which open extrnal website link, I want to apply css in body tag of external website, I write css in my css file Iframe body{transform:scale(0.5);}
But nothing happened.
https://code.sololearn.com/WF5DF5NsQDu4/?ref=app

Answer 1

You have no control of iframe site which is not the same domain as the html site.