Since the early wars between Netscape and IE, functionality has become the main tool in browser competition. But the strategy of unlimited growth and expansion is completely insane. For too long we have let it go on.
Using wget I downloaded all 1217 of the W3C specifications published to date1. A significant portion of these must be implemented in the browser for the modern web to work. I have calculated the scope of these specifications. How complex do you think the modern web is?
Many people probably know that the latest stable version of Firefox got its own web inspector. Its release was a matter of time, it is potentially very interesting, but now it's not specifically about it. In the 11th version of the browser this inspector will receive an interesting upgrade 3D DOM Inspector. This mode previously could be seen by installing Tilt 3D add-ons. In brief, this thing can visualize the components of the website and view them from different angles, it looks like this: