Ehy div is used for in html?

Answer 1

Div is short for division it creates space in the html document it can be used to create sections. You may style the div to add background color to a section of the page.

Answer 2

You can find multiple resources online. Have you looked them up?

https://www.w3docs.com/learn-html/html-div-tag.html
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div