Move element into Body

Design help General
1

Greetings!

Like an idiot, I styled my page in the page container rather than the Body container. Without starting again, how can I move the elements I’ve edited (from a template) into the Body container so it’s styled for all pages?

Many thanks
Camilla

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

2

Please share some images or best it give a design preview link with class names you referring.