How to change text size and font with card-mod?

Hi,

I’m using a Compass card and I’d like to change the size and font of the text used as the card name.
I installed a card-mod.
Unfortunately, I can’t figure out what code to write.
I would like the title to be in Araboto Normal font. I don’t know the exact size yet, say 20px.
Please advise how to do it?

type: custom:compass-card
indicator_sensors:
  - sensor: sensor.lacrosse_tx141w_senzor_vetru_wd
value_sensors:
  - sensor: ''
header:
  title:
    value: Vítr