Show page id in PHP code

I am not quite sure what you are asking for.

Sorry for the google translation
I mean, I want to show my pages, for example:

https://blog.michelrenard.net/curriculum-vitae/

without the header and footer.

More understandable or not?

Ultimately, I found what I had to tell you, what I want is applied to a white background themes and display only the page, it’s possible that?

Create ultimately pages with wordpress code with the themes borderless left, header and footer or possible?

Mz