Battery sensor icon (Very large)

Hi, I’m having trouble with the following code I’m trying to make a icon of a battery sensor to be very large on the screen as it is in the RV and it needs to be glanceable while driving.

I have most things working but I just can’t get the size of the icon to be large. I’m not quite sure where I should place it any help would be greatly accepted.

I’m no coder so tell me like I’m 5yrs old

type: custom:button-card
entity: sensor.victron_shunt_soc_226
name: Main Battery
show_state: true
state:

  • color: green
    icon: mdi:battery
    operator: ‘>=’
    value: 95
  • color: green
    icon: mdi:battery-90
    operator: ‘>=’
    value: 85
  • color: green
    icon: mdi:battery-80
    operator: ‘>=’
    value: 75
  • color: green
    icon: mdi:battery-70
    operator: ‘>=’
    value: 65
  • color: green
    icon: mdi:battery-60
    operator: ‘>=’
    value: 55
  • color: green
    icon: mdi:battery-50
    operator: ‘>=’
    value: 45
  • color: green
    icon: mdi:battery-40
    operator: ‘>=’
    value: 31
  • color: green
    icon: mdi:battery-30
    operator: ‘>=’
    value: 25
  • color: orange
    icon: mdi:battery-20
    operator: ‘>=’
    value: 16
  • color: red
    icon: mdi:battery-10
    operator: <
    view_layout:
    grid-area: c1