Lovelace: Button card

Right now I’m facing another difficulty, perhaps simpler than the previous one, but I’m having trouble solving it…

I want to have two font sizes and have them centered in the middle of the card.

imageimage

type: custom:button-card
icon: mdi:home-thermometer
entity: sensor.temperatura_media_casa
show_entity_picture: true
show_name: false
show_state: true
tap_action:
  action: more-info
styles:
  icon:
    - width: 22px
    - color: |-
        [[[
          var state = states['sensor.temperatura_media_casa'].state;
          if (state <= 18) {
            return 'rgb(100,149,237)'; //blue
          } else if (state <= 24) {
            return 'rgb(244,208,63)'; //yellow
          } else {
            return 'rgb(231,76,60)'; //red
          }
        ]]]
  img_cell:
    - background: |-
        [[[
          var state = states['sensor.temperatura_media_casa'].state;
          if (state <= 18) {
            return 'rgba(100,149,237,0.2)'; //blue_t
          } else if (state <= 24) {
            return 'rgba(244,208,63,0.2)'; //yellow_t
          } else {
            return 'rgba(231,76,60,0.2)'; //red_t
          }
        ]]]
    - border-radius: 100%
    - width: 30px
    - height: 30px
  state:
    - font-size: 14px
    - font-weight: 500
  card:
    - border-radius: 100px
    - width: 100%
    - height: 39px
    - background: rgb(39,39,39)
    - box-shadow: none
    - padding: 0px 10px 0px 5px
  grid:
    - grid-template-columns: min-content 1fr
    - grid-template-areas: |
        "i s"
    - gap: 0px 10px;