Where can I get a description of the correct adaptive?

Question

css

Interested in some official description of who sets the trend and correct layout.
Maybe from google documentation, firefox, etc.
Who asks. We want to make a correct site from scratch, so that it meets the correctness in all respects.

Answer 1

Yes, no one will give such standards. If you want to see the best creation practices, then you should look at how modern layout frameworks work. Same Bootstrap. Its grid is often taken to create an adaptive. You can use it as a whole and separately. It is enough to include bootstrap-grid.min.css or sass, if it is more convenient