How I do that (wide picture and narrow text)?

Hi there,

instead of using GP Sections i would recommend using the Block Editor with the GenerateBlocks plugin:

https://wordpress.org/plugins/generateblocks/

Then you would do the following:

1. Set your Page Builder container to Full Width.
https://docs.generatepress.com/article/page-builder-container/

2. Add a Container Block
For the Block settings you can set a background color / image / overlay.

3. Add any block inside the container - this will remain 'narrow'

Thanks. Check my site now. Why my front page big picture have so big spacings? How I delete spacings?
So much empty white areas...

And second question. Could you tell me how and where I can't put background picture?
Now I activate picture and there opened block styles window. If I choose cover, picture is changing black.
So if I change image, picture color changing bright. And height is going bigger?

I don't understand. Help me...

I mean spacing --> margin/padding...

And where I can change texts font?

I suggest watching this users video on using GenerateBlocks:

https://www.youtube.com/watch?v=V6TzewpRxQ0