Should the HTML and CSS courses be updated?

Hi Everyone on Khan Academy! 

I feel that the HTML and CSS courses should be updated.

I mean, the first video for learning HTML and CSS talks about 2014! 

The course mentions many tags that shouldn't be used in HTML (like <br> for an example)

And doesn't mention many important tags. 

And for CSS, there should be an area where you can learn about EVERY CSS tag, maybe the same for HTML---like what w3schools does.