Is there a way to see the stacking context, in IE/Firefox/Chrome/etc.?

Question

I\'m trying to track down a z-index problem. I\'m looking at the page in IE9\'s DOM Inspector, and I just can\'t figure it out.

I have one element with a z-index of 100

Answer 1

The current of MS Edge (using the Chromium engine with a build of "Beta", "Dev", or "Canary") now features: "Debug z-index stacking content with 3D View in the Microsoft Edge DevTools"

"a new feature to help debug z-index stacking context. The general 3D View shows a representation of the DOM (Document Object Model) depth using color and stacking, and the z-Index view helps you isolate the different stacking contexts of your page."

Press F12 (Windows), and then select the "3D tab" to view a visual representation.

More information: https://blogs.windows.com/msedgedev/2020/01/23/debug-z-index-3d-view-edge-devtools/