[lapcat]

  <meta name="viewport" content="width=device-width,initial-scale=1.0">

width=device-width is actually redundant and cargo culting. All you need is initial-scale. I explain in a bit more detail here: https://news.ycombinator.com/item?id=36112889

[qingcharles]

I've read your post. I'm going to test this on some crappy devices this week to confirm and then update my boilerplate.

[cxr]

outerHTML is an attribute of Element and DocumentFragment is not an Element.

Where do the standards say it ought to work?