Overriding --f7-popup-tablet-width on floor plan pages

Is it possible to override the popup width on floor plan pages? I have a marker whose action is to open a popup, like so:

  - component: oh-plan-marker
    config:
      coords: 1662.0449580156371,1004.6138412894518
      action: popup
      actionModal: widget:webcam_popup
      actionModalConfig:
        showAlarms: false
        streamURL: https://xxxxxxxxx/cgi-bin/mjpg/video.cgi?subtype=1
        url: BackYardCamera_MJPEGURL
      icon: oh:camera
      item: BackYardCamera_MJPEGURL
      name: Camera
      useTooltipAsLabel: false
      tooltip: Camera
    slots:
      default: []

The popup width is fixed at 630px per the f7 variable --f7-popup-tablet-width, which is in the :root pseudo-class in app.cs.

I am unable to override this variable (per the documentation on styling in pages) either by setting the variable in the page configuration:

config:
  imageUrl: xxxxxxxxxxxxxxxxxxxxxxxxxx
  imageWidth: 2832
  imageHeight: 1884
  backgroundColor: white
  label: "Security"
  sidebar: true
  style:
    --f7-popup-tablet-width: 740px

or by setting it in the marker configuration:

  - component: oh-plan-marker
    config:
      coords: 1662.0449580156371,1004.6138412894518
      action: popup
      actionModal: widget:webcam_popup
      actionModalConfig:
        showAlarms: false
        streamURL: https://xxxxxxxxx/cgi-bin/mjpg/video.cgi?subtype=1
        url: BackYardCamera_MJPEGURL
      icon: oh:camera
      item: BackYardCamera_MJPEGURL
      name: Camera
      useTooltipAsLabel: false
      tooltip: Camera
      style:
        --f7-popup-tablet-width: 740px
    slots:
      default: []

Am I going about this the wrong way? Is there some other way of setting this variable that I have overlooked?

From the lack of responses, I assume that this is not possible. :frowning:

Where’s the appropriate place to file an enhancement/feature request? Is this openhab-core or openhab-webui?