How do I remove this part of the site

[bdalrhmnshryf628 (عبدالرحمن شريف)]

I am not an expert in websites, and I do not know how to extract the JavaScript code to remove this piece, and I searched a lot, and it exhausted me very much. Can someone help me?
Here is my website link black wolf

[PH_M_DUY_HOANG (GK)]

Try remove …

[bdalrhmnshryf628 (عبدالرحمن شريف)]

I used this code and it didn’t work ( document.querySelector(‘.widget.HTML’).style.display = ‘none’; )
in component valuate JavaScript block

[bdalrhmnshryf628 (عبدالرحمن شريف)]

I want to remove it in my app

[PH_M_DUY_HOANG (GK)]

if this your web, just edit sourcode …

[bdalrhmnshryf628 (عبدالرحمن شريف)]

How is that

[PH_M_DUY_HOANG (GK)]

your web is html, php, wordpress or …?

[bdalrhmnshryf628 (عبدالرحمن شريف)]

Blogger site

[bdalrhmnshryf628 (عبدالرحمن شريف)]

Here is the method I used and it didn’t work

[bdalrhmnshryf628 (عبدالرحمن شريف)]

I solved it just now the code was wrong
Here is the correct code
document.getElementById(‘HTML0’).style.display = ‘none’;