What website can I use for HTML

Question

https://www.sololearn.com/discuss/1316935/?ref=app
https://code.sololearn.com/cGJ9EPq5DM7L/?ref=app
https://code.sololearn.com/W33Xfyr39emV/?ref=app
https://code.sololearn.com/co2qWShaA1pf/?ref=app

Answer 1

Some of the websites that I use are:
w3School
StackOverflow
Css tricks
and Sololearn.

Answer 2

Please don't share others code with your questions. It create confusion.

Answer 3

I use:
W3Schools
GeeksforGeeks
TutorialsPoint
StackOverflow