block line spacing

Permalink
Please can anyone guide me as to how to edit the line spacing on the page list block in version 8?
I've looked everywhere. I know it's probably something to do with a .less file but can't figure out which one, or where it is, or what to edit?
Why oh why, did they remove the ability to adjust this on a single block. It was so easy before.

deanhawthornthwaite