Introducing Firefox 3D View for Developers

Firefox now includes a 3D View as part of its suite of built-in developer tools.

Helpful for debugging, the 3D view stacks elements as they are nested in the DOM and lets you see elements that are hidden or off the page. You can zoom in and out, rotate and pan the view to see the page from any angle that is helpful to you.

Go to the Developer Menu, select Inspect, and then 3D View to see your pages or any website in 3D.