css (commented out): https://de.wikipedia.org/wiki/Benutzer:Doc_Taxon/TestA/styles.css
page: https://de.wikipedia.org/wiki/Benutzer:Doc_Taxon/TestA

Hi, I want to style the page body content with light blue background and double border like given in linked css (commented out). This style should be for the whole page body content of https://de.wikipedia.org/wiki/Benutzer:Doc_Taxon/TestA , but I don't want to use a div container for this.

What is the id name or class name for the whole page body content to set the page style like given in linked css?

Thanks for any help.

Martin