i was just wondering, are we working on HTML 5 and CSS3 ?
You know what html5 is? it is still html, only new tags/structures where introduced. You still need the basic html. Anyway, if you are truly interessted in html5, finish this course and then go to edx for a course on html5.
Codecademy covers some html5, but mostly, which is what you need for now
The type of HTML and CSS code that Codecademy teaches are HTML5 and CSS3.