What are Page Builders?

Plugins like Elementor, Site Builder, Beaver Builder, and others.

OK, but do you first get a theme (Like Astra) and then get a page-builder plugin like Elementor? Or vice-versa?

Most page builders work with any theme. What Astra is saying is that they’ve paid attention to how page builders work in the design of their theme, so if you want to use their theme, you have a good chance of it working well with a page builder, should you choose to use one.

I don’t use either, so can’t say much more. ??

Could someone tell me more? I used the Astra theme for the last site I created, but don’t think I used a “page builder”.

I recommend asking at https://www.ads-software.com/support/theme/astra#new-post so the theme’s developers and support community can help you with this.

Thanks, I did that.