Comment by webstrand

I like how z-index works, currently. And though I agree with the article, it should apply to all elements by default, I'm not sure how you'd do stacking differently in a way that'd work any better than the current situation?

You can't do away with stacking contexts, you need those to isolate content you don't control to prevent it from breaking the stacking order of content you do control.

I completely agree with you about h* tags, though. I wish html5 sectioning hadn't been killed by the browser vendors. As is there's no safe way to put headings inside custom elements. We almost had it, it was specified and everything.