Why doesn't css work on WP?

Question

css

I’ve been trying for an hour now to add a background image to wp through additional styles in the settings (so that I don’t climb in the style.css file itself), and then make a composite background from several images (otherwise even 1 image is not added), but background-image is not wants to work, only background-color works. Apparently not correctly as I indicate the link, tell me what the problem is. (in the first picture, only the .l-main class works, I tried to put the body, but it doesn’t change anything at all)
The same problem with fonts. I tried it in the normal way, through several fonts in the form (As in the 2nd picture), but it doesn’t help either

Answer 1

There is a cool yellow pencil plugin for WP, try it

Answer 2

Probably just cache. Or browser or server or wp itself. open through the css code inspector and see if your edits are there, I think not.