Reducing Entity Card Column Width and Increasing Total Number of Columns

I have two different Lovelace “views” that I want to merge into a single “view”. The problem is that both views are fairly full (one has all of my smart switches and the other has my alarm sensors).

I thought it would be pretty straightforward to make them all fit - but I’m having a hard time finding the right guide to follow or resources to use.

I only use this front end on a dedicated 24" monitor, so I have plenty of width to work with - but the default “entity” card uses a lot of width and therefore has a lot of empty space in the middle (see picture).

My questions:

  1. How can I reduce the overall width of the entity card?

  2. How can I increase the number of columns in the lovelace “view”?