[blauditore]

I'd say not too much from a high perspective. Browser support for new HTML5/CSS3 specs got better, so it's safer to use stuff like flexboxes now. But resources for learning the basics from then should still be relevant, and potentially got updated anyway.

Regarding JS, there's an ongoing shift of hype between various front end frameworks like React, Angular or Vue. Others go back to vanilla JS, as it has better standardization and more power nowadays. But maybe that's not too relevant for you.