Incorrectly themed actions page

[teidesu]

(can be seen live on https://git.stupid.fish/teidesu/mtcute/actions/runs/2/jobs/2)

• transparent background on the sticky header
• no visual separation between the sidebar and the output pane
• no hover/active effect
• no colors in output

for comparison, with downstream catppuccin codeberg it looks like this (much better) (live here):

i believe this is due to the fact that on codeberg the userstyle is applied on top of the default styles, and with forgejo themes directly the css file is replaced completely