hide HOME PAGE navigation CSS

I have created a LANDING PAGE site with Elementor --( 1 page) so the home page has it OWN dynamic NAVIGATION on the page as a element to navigate up and down the home page only

BUT now they want to be able to add NEWS articles -- I have created a separate MENU that I have added to the top of the BLOG PAGES that is the Primary Menu for ONLY blog and blog pages -- I do NOT want this MENU to show on the home page

-- I cannot hide the menu function as it then hides it across the whole site.

SO I need a CSS ability -- there is NO page ID showing to use the CSS that says HIDE PAGE ID

OR have a done something wrong in setting up the menu as a PRIMARY menu for the blog area ....a little confused on how to set up a separate MENU for blogs ONLY to show on the TOP OF the site to the right of the logo that just says-- HOME and BACK TO NEW -- because if they open the blog area they only see the site LOGO and no navigation as the HOME PAGE navigation is only for the landing page and not for the whole site!

--- Landing page website is a good sell as you only NEED one page and use it like a brochure with the menu ( that you import as a menu insert ) that spins up and down the LONG page.

thanks

Joanne