Questions about using a Banner card

So I am trying to create my own dashboard for my HA and I am using the Lovelace banner card. However, the font is too big. Also, I would like to put a toggle beside it to turn off all lights. How do I do that? This is what I have so far.

Ideally, I need the font smaller and on the top right, I want a little toggle switch that could turn off all the lights in the guest room. I don’t know how to code this under the card configuration and was hoping the community could help.