“Tilt” 3D View of Web Page Structure
Open up the Page Inspector Web Developer->Inspect from the menu, or Inspect Element in the context menu on the page, and you’ll see a new 3D button on the toolbar if your computer is compatible with WebGL. Click that, and you’re presented with a whole new perspective on web page structure.
This 3D view which was previously available in an add-on called Tilt, 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.
The 3D view is fully integrated with the rest of the Page Inspector functionality. You can open the HTML view or the Style Inspector for more information about the element you’ve clicked on in the 3D view. You can also change selected elements using the breadcrumbs on the toolbar.
The controls for the 3D view are easy:
|Rotate||Click and drag||
|Pan||right-click and drag||Arrow keys|