The css code does not work?

hey the css code does not work on my computer and i can not use to code online like local host it is offline save and then it works. can anyone guys out there help me what to do?

Thanks.

Explain the problem with more detail.

will correct you css definitely works on your computer, but probably it is not on a browser. And first thing what you must to check is a link from html to your css file. Than I assume you want to use live server and autosave, those are Editor options, so I use visual studio code and there are extensions.