HTML compatibilty of older version with newer version

Question

We say that many tags that were supported in HTML4 are deprecated in HTML5. After the updation of html version, What i think is in doctype we will specify HTML4.
But what if i want to include some features to my website which are not supported by the older version. Does that mean I will need to update the tags like bgcolor to background-color or is there a way to make the old written websites compatible with the newer version without having to make any changes?

Answer 1

While exploring I myself got this answer.
Anybody else want to know?
You can check this:
https://www.w3schools.com/html/html5_migration.asp
:)

Answer 2

In my opinion, you sbould use HTML5 as it has a lot of new and shorter tags such as:
header
nav
footer
section

Answer 3

I think we should use newer version because it not only introduce new tags but also make developing website a lot easier.

Coming to your query , I think majority of useful tags of older version are still there in newer version and if there are some ( which are not supported ) it not makes development any difficult.

Hope this helps ☺️☺️.

Answer 4

okay.. thanks a lot 😊