Hello, @IP,
Once you removed the sidebar and set the sections on the page and add the widgets in it. As I showed you in this image: https://postimg.cc/B8r8zMFq –it is a widget the same as this you can add a widget and set the static block in it. In the static block, you can add the content you want text, images, video just as per your need. Then the content you added in the block will appear there and below you have the sections full width of the content you want tabs, etc.
Regards 8Themes Team.