HA - YAML - Custom:button-card example witH blinking background

type: custom:button-card
entity: binary_sensor.door_contact
name: Door
state_color: false
state:
  - operator: '=='
    value: 'off'
    icon: mdi:door-closed
  - operator: '=='
    value: 'on'
    icon: mdi:door-open
    color: white
    styles:
      card:
        - animation: blink 2s ease infinite
        - background-color: darkred
      name:
        - color: white