How to have consistent Space after heading styles?

Hello,

I am fairly new to Adobe XD. I am also very fluent in InDesign and come from a print background.

I am laying out a large website and was recently asked to design the phone and tablet versions as well. So I began using XD since it comes with my subscription. But I'm having some problems:

1. I can't figure out how to have two styles in one text box. (Currently each style is in it's own text box in my layout - not ideal!)

2. I can't figure out how to set consistent space between headings and body copy (right now I'm guessing!). I know how to set the space between two paragraphs of the same style, within the same text box, but not when there are two styles (such as a heading and a paragraph of text).

Is there a way to set a consistent 'space after' for each heading style?

Any help would be enormously appreciated!!

- Lila

{Renamed By MOD}