Marie

Because you are using the Pro version you can set up a maximum of 12 break points (resolutions)

WX5 does not support true variable width websites, but you can add breakpoints to emulate full screen and various resolutions down to mobile (the minimum is 320px).

Step 2 template, resolutions and responsive design.

Because you dictate the breakpoints you can design your site exactly as you wish without random placement of objects, you can even remove objects at lesser resolutions when they are not necessary.

Combine this with the row formats option (step 4 pages, row formats top right), menu background and full width sticky bar and the user will see what appears to be a full width site.

Hi Marie, 

please revise Esahc's suggestions, and if you need help please feel free to get back to me, I will be happy to help you further. 

Kind regards.