Advertising underneath on main menu on all pages

Hello,

Please how can I insert an advertising banner under the main menu and on all pages of the site?

On the home page I have inserted AdBox, but it is not shown on the other pages of the site (category,post,page,tag…).
https://snag.gy/GSErcM.jpg

I manually entered the AdBox code of the home page in the header-style-3.php file and the ads are displayed correctly on all pages. Of course I will remove the AdBox from the home page. https://snag.gy/2QYd5f.jpg

I just have to test better on mobile devices and possibly make some minor changes to the CSS. I will also remove unused CSS classes.

Some pages of my site:
http://cambiovita360.it/questo-e-solo-un-articolo-demo-stiamo-testando-il-sito/
http://cambiovita360.it/tag/italia/
http://cambiovita360.it/category/videos/

Please what do you think? Am I doing the right thing?

Thanks so much.
Gabriel

Updates:

I have decided to no longer insert the AdBox code manually in the header-style-3.php file.

I have decided to insert a new container div with the CSS class “ads2”.

Here is the screen of the code entered: https://snag.gy/q6yJXa.jpg

This way it works well with all devices and displays advertising as I want.

Here is an example:
http://cambiovita360.it/questo-e-solo-un-articolo-demo-stiamo-testando-il-sito/
http://cambiovita360.it/tag/italia/
http://cambiovita360.it/category/videos/

Please what do you think? Am I doing the right thing?

Thanks so much.
Gabriel