Create a group of devices in Entities Card

Hi,
i was wondering if it is possible to group devices/entities together. Meaning them sharing some kind of the same background.

For example combining these two together to make them look like the the entity above:

The Code looks like this

type: entities
entities:
  - entity: light.wohnzimmer
  - entity: light.vitrine
  - entity: cover.wohnzimmer_2
  - entity: media_player.wohnzimmer
  - type: custom:vertical-stack-in-card
    title: Lautsprecher
    cards:
      - type: glance
        style: |
          ha-card {
          box-shadow: none;
          background: transparent;
          border-radius: 0;
          margin: 0px;
          }
        entities:
          - entity: switch.sonos_wohnzimmer_crossfade
            tap_action:
              action: toggle
            show_state: false
          - entity: switch.nodered_9c64bc8c_8fd56
            tap_action:
              action: toggle
            show_state: false
          - entity: switch.nachtmodus
            tap_action:
              action: toggle
            show_state: false
  - entity: media_player.tv
  - type: custom:vertical-stack-in-card
    title: Multimedia Eingang
    cards:
      - type: glance
        style: |
          ha-card {
            box-shadow: none;
            background: transparent;
            border-radius: 0;
            margin: 0px;
          }
        entities:
          - entity: switch.bat_hub_xbox_one
            type: button
            tap_action:
              action: toggle
            icon: hue:room-games
            show_state: false
            name: XBOX One
          - entity: switch.bat_hub_xbox_360
            type: button
            tap_action:
              action: toggle
            name: XBOX 360
            show_state: false
            icon: hue:room-games
          - entity: switch.bat_hub_receiver
            type: button
            tap_action:
              action: toggle
            show_state: false
            icon: hass:monitor
            name: Fernsehen
title: Wohnzimmer
theme: kibibit
state_color: true

Many thanks,
Markus