classes: {
  zone: {
    style: {
      fill: transparent
      border-radius: 12
      stroke-dash: 5
    }
  }
  emptybox: {
    style.opacity: 0
    *: {
      style: {
        fill: transparent
        border-radius: 8
      }
    }
  }
  switch: {
    shape: image
    icon: https://git.0w.tf/milka64/d2class/raw/branch/main/svg/switch.svg
    label.near: center-right
  }
  router: {
    shape: image
    icon: https://git.0w.tf/milka64/d2class/raw/branch/main/svg/router.svg
    label.near: center-right
  }
  firewall: {
    shape: image
    icon: https://git.0w.tf/milka64/d2class/raw/branch/main/svg/firewalld2.svg
    label.near: center-right
  }
}