Sorry, but my, and most people's, thoughts, is that code should be easy to read and understand what's going on. Jade does not do that. It might take "two seconds" to learn, that's extra time that you're wasting going and looking it up. It's much simpler to just write <div class="container">, that way everyone who knows HTML and looks at your code will know what's going on. Jade is bucking a standard for no real added benefit.