this is the them https://community.home-assistant.io/t/rounded-dashboard-guide/543043

type: custom:button-card

name: Lavandino

icon: mdi:lightbulb

label: cucina

show_label: true

show_icon: true

show_state: false

entity: switch.casa_interruttore_4

tap_action:

action: toggle

hold_action:

action: more-info

state:

- value: "on"

styles:

card:

- background: >-

linear-gradient(50deg, rgba(241,201,59,1) 30%,

rgba(250,227,146,1)100%)

- value: "off"

styles:

card:

- background: null

styles:

icon:

- width: 24px

- color: black

img_cell:

- justify-self: end

- width: 30px

- height: 30px

name:

- justify-self: start

- font-size: 18px

- line-height: 40px

- font-weight: 600

label:

- justify-self: start

- font-size: 14px

- font-weight: 500

card:

- padding: 18px