Should I use bootstrap4grid or not?

Question

css

Hello. I am a backend developer, I have a website design in psd. I decided to make up everything myself, as needed, at the same time learn what I can.
In general, the layout has a navbar, left and right sidebars, and a central content area.
Now I'm deciding what to use. While looking at flex and css-grid, but there is also bootstrap4grid (and other custom grids). Should they be used? Or write on flex+css-grid?
Time-complexity is not important, I can master any technology. What is important is a good result, ease of change, the consistency of the entire system and, of course, a reserve for the future.
PS: I'm not going to use any bootstrap elements (not related to the grid) in their original form.

Answer 1

Should they be used? Or write on flex+css-grid?

CSS Grid is not yet supported anywhere, if you want to write on it with fallbacks on flex, a post on Habré about it It’s
definitely worth using the grid, but I don’t advise you to interfere with CSS Grid.