Where to make change to have them set to full screen 100%

Can you tell me where I can set the template to go full screen?

I would like for the header, footer and category pages to go full screen.

Hello,

Unfortunately, the theme is developed and tested with a restricted content width of 1000px for desktop devices. We provide a fluid template (Nop Minimal Theme) to satisfy the demand for such a theme. If you submit us a ticket we can give provide you with custom CSS which will stretch the content to the full width of the page. Unfortunately, we can't guarantee that there will not be problems with styling breaking in some pages. Therefore we recommend that you leave the content width restriction as it is.