install confusion.

[mindcloud69]

Look at the simple install locally hosted code. where exactly do you put the files you are referencing.
like

<style>
    code/mad-wikijs-customization.css contents
</style>

where is the mad-wikijs-customization.css file stored?

[madodig]

As stated in the readme: "Wrap the contents of code/mad-wikijs-customization.css file with HTML <style> tag and paste it in the CSS Override field".
In github, navigate to code/mad-wikijs-customization.css file, copy its contents ("Copy raw contents" button), navigate to your Wiki Administration/Theme, paste the contents inside CSS Override field, and then type "<style>" to the beginning, and "</style>" to the end:

The contents of the CSS Override field should then look something like this:

<style>
    /* https://github.com/madodig/wikijs-customization */
.contents summary{border:0.....
</style>

Do the same for the Head HTML Injection and apply the changes.