[help] why home button is not working

Question

plz tell me why home button is not working ... I've defined function in js ...after clicking button color of screen should turn yellow
https://code.sololearn.com/Wxa2A9CMIi37/?ref=app

Answer 1

document.getElementById('de').style.backgroumdColor="yellow";

typo error, should be

document.getElementById('de').style.backgroundColor="yellow";

Answer 2

oono such a silly mistake i did😥

Answer 3

можно по русски?