Landing page size and layout, which one to use?

Question

Adaptive design

Good day, I'm wondering what width should be used when creating a landing page or what width is used in modern adaptive landing pages. And what is the best markup to use for them. I would be grateful for a link to the markup and a sensible answer to the question.

Answer 1

what width to use

Any site on any screen width should look sane.
Statistics can be found by typing in a search engine something like "screen resolution statistics". For example, www.liveinternet.ru/stat/ru/resolutions.html
I didn't understand what you meant at all.

Answer 2

You need to study the most popular screen resolutions and the most popular css frameworks, they usually immediately answer the question of what resolutions you need to make up.
Bootstrap 4
Foundation 6
But in normal practice, permissions for layout are set by the terms of reference for layout, and not by the imagination of the layout designer.