Change login screen background

Good evening,
I wonder how I can change the background of the login screen, change the all white for another. Thank you

It's a regular HTML page.

Where is the html please?

It's in the "web" subfolder.

Here is the source code:

https://github.com/tananaev/traccar-web

Sorry I can not use the cloudflare, I would have to direct change it or have as I only edit the local html and change the background? Thank you and sorry for my lack of knowledge.

What does CloudFlare have to do with anything? You just need to change local HTML or CSS code.

Sorry but I tried in every way, including the following code in debug.html and release.htm files but has no effect, does not change the background color.
Where am I going wrong?

<style rel="stylesheet">/>
body { background-color: #cff; }
</style>

Thank You

It works, but then it gets replaced with some ExtJS styles. You can find another way (not using body), or create a custom ExtJS theme.

I will do that, thank you

hi can you specifies which ExtJS styles file is using foe login page

You can start reading about it here:

https://docs.sencha.com/extjs/6.2.0/guides/core_concepts/theming.html

Good afternoon, where this is the command to eliminate the white background from the login part, the query is transparent. Thankful if you can help