Text Properties - How to adjust/shrink the spacing between lines

Notice the highlighted area in the screen shot below. I would like to 'tighten' this up a little - decrease the spacing between lines, especially the lists starting with "-". I tried using the bullets, but not sure how to make the spacing look right between the bullet and the text.

Hi,

I checked your form. You can do it with adding CSS code. Please add this. You can change 10px to your wish. If you want to just select lines starting with bullet, please reach us again. We must add more specification to do that. Best Regards.

#text_6 p {
  margin:10px 0;
}

Is there a way to be more selective? Decrease only the spacing on the items with hyphens in front of them vs the entire text?

Unfortunately,we cannot select the text individually as it is grouped. We can only adjust the entire group of text using my colleague's code.

If you need further assistance,please let us know.

Thank you.

Ok. I'll live...LOL. Thank you Richie:)