how can one access the coding environment of a random webpage. In order to learn, practice or edit.

Answer 1

The dev tools in all major browsers also let you insert and edit CSS and HTML.

Answer 2

Not sure if that is what you mean, but if you hit F12 on any webpage you can write javascript and you have access to all the javascript that runs on that site.

Answer 3

OK. got it. thanks.

Answer 4

what about HTML and CSS