How many days before complete html fundamentals successful?

Answer 1

You could do it in 1 day as much as you could do it in 1 month.
It depends on your capacity to grasp new concepts. HTML is pretty easy tho, so you should not find problems.

Answer 2

3days

Answer 3

15 days

Answer 4

I spent 3 months to learn html before I can build a web.. more 3 months for css+js.. and after 1 year later, I still intermediate level😁😁