If you think on the “Front Page boxes”,
to show/hide it below the page content go to: Customizing ▸ Front Page Boxes ▸ General menu, enable the Boxes and set the visibility to “All pages”. https://prnt.sc/kns8ro
Then give me the pages where you don’t want to show the boxes and I will give you a right CSS code to hide it on that pages.
Follow the next steps, to show the front-page boxes on the two pages you mentioned above:
Go to Customizing ▸ Front Page Boxes ▸ General menu, enable the Boxes and set the visibility to “All pages” and the “Position” to the “Below Page Content”
then insert the following code into Customize->General->Additional CSS: