Full browser width footer?

You’ll need to make a Child Theme for this change. First do that.

Sure I had a child theme. I’m asking to work on childtheme.Thanks anyway

Copy footer.php and paste it into your Child Theme.

Then, edit footer.php and replace its contents with this code https://pastebin.com/TCa7xBAp

Hi Andrew.
I have just replaced your footer but the footer still doesnt reach either edge of browser (like full width browser). It still appears like before, no effect. Pls take some mins to review. Thanks a lot!

Can you post a link to the site?

i dont have any clue, pls help me thanks

Add this to your Child Theme style.css file;

footer[role="contentinfo"] {
 max-width: none;
}

thanks a lot. Finally, your code worked great after some hard work days. Thanks again!