Hello, regarding changing the popup background image, hope can help me out.

[horacecar]

I would like to know which variable to change the background image of the popup window(using browser mod). i have tried the variable below but still fail. once changed the background image, when click the popup, the background image will move, please see the video that i uploaded.

https://user-images.githubusercontent.com/44496483/110235408-c39c6680-7f6a-11eb-9b26-acec9df7f02c.mp4

      card_mod:
        style: |
          :host {
            --card-background-color: var(--background-image);
              }

          ha-card {
            background: var(--background-image);
          }

[KTibow]

This should go in the forums.