Stuck here, need some help

Sorry but can you explain more what is problem here? I saw content is display normal.

The page contents starts at the far side of the page..it does not have like a small margin.

Oh, with sidebar or layout, you should override or add css in your theme.

Do you know or have such css for a theme override?

My mean: with layout, you have to change it in your theme, or using child-theme to override. My plugin just provide functions.

Sorry for bothering too much..but how can i override my theme? i am using oceanwp child theme