Greetings. I'm a bit of a noob, and I'm hoping to get some basic CSS help to create custom page (container) widths in my WP site.

I created a test page. It's here: https://perfectwoodgrain.com/test-page/

The theme (Voyage) includes a custom CSS field.

I've tried many variations of CSS to change width, but no joy.

Any help would be immensely appreciated.

Thanks for your time.