Is there a way to see the stacking context, in IE/Firefox/Chrome/etc.?
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 10000, and another with a z-index of 7000, and yet the z-index 10000 is drawing below the z-index 7000. Clearly somewhere in the hierarchy, something is setting a stacking context, but I've been browsing up and down the hierarchy and I haven't been able to find it.
Nothing other than these two elements, so far as I can see, has a z-index set. And nothing as a opacity value set. and I'm seeing this in FF5 and IE9, so it's not the old IE<7 stacking context bug.
Do any of the browsers have a tool that will tell me which element is setting a stacking context?
Thanks.
Answer
If you use Chrome https://github.com/gwwar/z-context is a simple extension to see:
- If the current element creates a stacking context, and why
- What its parent stacking context is
- The z-index value
and important, like aprohl5 said: The z-index property can affect the stack order only if the position is explicitly set to fixed, absolute, or relative.
This is a nice way to mantain order with Sass https://www.smashingmagazine.com/2014/06/sassy-z-index-management-for-complex-layouts/