How do I set my background image to full screen?

All featured articles do not have a full-page background image but are included in a frame. See attached photo.

Hello,

In the original template demo, the wooden background uses the full width of the screen: demo.hotjoomlatemplates.com/food_spirit/

If it's not the case on your website, you probably made some adjustments that change that. To tell you precisely what the problem is, I need a link to your website, so we can inspect the code.

Regards,
Milos