Not able to change css properties from a .css linked in the body instead of the header

[DoktorSultan]

Css linked outside header: I am not able to change any css properties from a .css linked in the body of the document.
No matter what I try....

In this case I need to change css properties from index-884477df.css (see screenshot) on discogs.com

Does anyone know how this can be done?

[DoktorSultan]

I still had an open window from this morning, before the site changed, and when the stylesheet still did work:

Here it is linked in the body too, but in a different way (index-74128a7b.css is the name of the previous stylesheet)

I'm completely puzzled why I can't apply any changes any more, including trying to use !important.

It looks like it related with the #shadow-root -> https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_shadow_DOM

[tophf]

Stylus doesn't support ShadowDOM currently, see this thread for workarounds.