Desire every conceivable way to style Page Builder text widgets

As mentioned in an email, it would be wonderful to have a tutorial that in text format (not videos) tells how to style every aspect of Page Builder rows and widgets: spacing above and below widget headings; horizontal spacing between widgets; spacing between rows; background colors in rows and widget content; lines above and below widget headings; and so on. It would be great to have lots of visual examples.

ALSO: It would be wonderful if Pootle text widget formatted code normally in Text (HTML) mode – not run-together as it presently does. It is a real PITB to sort through unformatted code.