Firefox 11 was officially released last week, one of the feature I was looking forward to ever since Mozilla preview the feature in their Beta release is the 3D Web Inspector. If you’re Firefox is not yet on version 11, you need to go get the latest version now.
Here is the cool trick to view any webpage in 3D space, and Yes you can drag and tile the angle to whatever you like.
Now you will see this dark blue-gray bar appear on the bottom of the screen, move your cursor to the left you will see the 3D button. By default it is not enabled, by clicking it, it will instantly turn your current page into 3D.
You might not see any effect at first glance, but wait until you click and drag/move around the web page with your mouse.
Now you will see all the different layers of the webpage stacking on top of each other. It’s pretty neat feature, and might be useful for you if you are a web developer.