What is use of <div> tag

Answer 1

Have you searched for it?
There are many uses.
https://www.sololearn.com/discuss/1156466/?ref=app
https://www.sololearn.com/discuss/210727/?ref=app
https://www.sololearn.com/discuss/3043944/?ref=app
https://www.sololearn.com/discuss/2241929/?ref=app
https://www.sololearn.com/discuss/1617780/?ref=app
https://www.sololearn.com/discuss/468202/?ref=app
https://www.sololearn.com/discuss/260813/?ref=app
https://www.sololearn.com/discuss/941566/?ref=app
https://www.sololearn.com/discuss/227603/?ref=app
https://www.sololearn.com/discuss/456628/?ref=app
https://www.sololearn.com/discuss/1095460/?ref=app
https://www.sololearn.com/discuss/2047592/?ref=app
https://www.sololearn.com/discuss/2459325/?ref=app
https://www.sololearn.com/discuss/2079366/?ref=app
https://www.sololearn.com/discuss/14077/?ref=app
https://www.sololearn.com/discuss/1332905/?ref=app
https://www.sololearn.com/discuss/2358558/?ref=app

Answer 2

Learn html from the courses

Answer 3

Paras Ghanekar Exactly the one explained in the course and the language docs. What did you understand from it, and what got confusing?

Answer 4

Mostly just a placeholder for class or id tags, for css and/or JavaScript to refer back to.