Combine One File (CSS Style + HTML Code)

I would like to combine one style with an HTML file. I know it's possible, but I really don't know how to do it. I want to combine the full code. Please help.

CSS Style:
pastebin.pl

Edited 2 time(s). Last edit at 2020-02-16 09:00 by maki.

Okay, I compared the complete website with simple html and it needs to be changed href path

Find:
<link rel="stylesheet" href="/styles/s_main_11.css">

Replace with:
<link rel="stylesheet" href="..\styles\s_main_11.css">