Hello, as you requested to share the link in previous support thread. I am sharing the link, please go through it and help me.
The site is not mine; however, this site is using gp premium and I need the homepage design design to be the same.
The content container should align with primary navigation.
can you go into Customizer > Layout > Sidebars and set ALL options no sidebar. Once done publish those changes and clear any cache plugins and the browser cache.
If the problem is still there then we would need to see YOUR site.