How to set theme background image so that one background image works perfectly on both PC and Mobile App Chrome browser?

Otherwise, to make it simpler, how to modify an image of an already existing theme?

I’m very sorry, indeed, I should have said so, thank you for your help.

dashboard tels you that you dont have dashboards.
you need to have a dashboard called nicotest in the dashboards directory.
if you have a file there, then it probably has wrong yaml.

es this is the problem, or should I put the folder custom_css? in /appdaemon/compiled/custom_css?

like in the picture?

copy an exiting them to a subdirectory from your custom_css directory
then modify that skin

you can place the images somewhere in the web directory.

first make sure you got a working dashboard
then test the un modified skin
then make changes to the skin

no the compiled directory doesnt need anything.
that directory is only for temperary files that appdaemon creates automaticly.

your structure should be:

config
  appdaemon.yaml
  dashboards
    your_dashboard.dash
  custom_css
    your_skin
      variables.yaml
      dashboard.css
  apps
  web
    img
      your_pic.jpg
  compiled
    css
    html
    js

ok I’ve done this before but I think I put custom_css in the wrong place.

So I need to modify the .yaml of appdaemon? And add your code?

nooo.
i didnt show code at all but a directory structure

This is what I have in my appdeamon. Yaml.

sorry I’m lost

I did, but the image doesn’t show up.

you edited the wrong section in the dashboard css file.

you need to be in body and not in body::after

I don’t understand. I’m sorry, would you be willing to model for me, please?

sorry dont got the time for that.

Okay, I understand. Thanks anyway.