Can't change background

i cant change my background on Bakery Template please can somebody help me?

this is my link template from colorlib Bakery - Free HTML Bakery Website Template - Colorlib

Hi there,
Thanks for reaching out.
In reference to your question here, you can navigate to the main.css file under the directory bakery>css folder and you will find a CSS line that reads:

You can alter the image reference from the code.
Alternatively, you can navigate to the directory bakery>img and alter the banner-bg image in place with your own image but using the same file name.

I hope this helps.
Best Regards,