Removing Navigation from all pages

Site URL: https://www.actionlegalprocess.com

I've seen this question previously but mine is a bit different.

I want add multiple pages to my site, but I dont want the navigation tab on the copied customized pages.

I tried some code that removed the navigation, but it also removed my logo that was in the same place as navigation.  Can I just remove the navigation of the multiple pages?

TIA

Remove your code

#header {
    display: none;
}

and add this to DESIGN > CUSTOM CSS

/* hide nav - all pages */
div#mainNavWrapper {
    display: none;
}