HI! I'll start with saying: I'm NOT good with CSS. I am absolutely atrocious with coding and abhorrent with things with multitudinous levels of complexity. As someone entirely new to the world of CSS, I'd love some help, some tips, and some explanations for most things.

As I've stated before, I am AWFUL with CSS, but I do have a template courtesy of:
Free to use CSS template by Katie (#106445)

I've tried using CSS guides by Lioden users who've created their own CSS, but every time I used them I ran into a problem (mostly they were outdated).

Thus, I've come to the forums for help with my CSS. I've already edited and tried to personalize the template, but all I've achieved when inserting the code is immeasurable levels of pencil-snapping frustration and an illegible, too-dark den that I can't do anything with. Any and ALL help is appreciated, even if I'm too dumb to understand what someone's telling me at first.

(Additionally, I've spent about seven hours fixing and re-fixing my code, and I'm genuinely so frustrated that I've renamed the CSS file a few nasty things. Apologies if those curse words are somehow accessible to you via Dropbox! )

Here is my code!
https://www.dropbox.com/scl/fi/pzdxoiuobc0if3pkaivyv/IHATEYOUCSS.css?rlkey=u7e0t7yk0yitoa8tyngz7xje2&st=qhaevyn7&dl=0

- PLEASE NOTE THAT I CANNOT PAY FOR THIS HELP WITH GB, ITEMS, LIONS, ETC. AND AM VERY LOW IN SB AT THE MOMENT, IF YOU FEEL YOU REQUIRE COMPENSATION PLEASE REQUEST IT IN MY DMS, I CANNOT GARUNTEE I CAN PROVIDE IT!! -