RE: Thoughts on Font-x-size property for CSS

Hi Andrew,

Just a couple of observations from having been in the standards / W3C space for a while:

  *   I've never seen an argument for "this is needed for accessibility guidelines" work with HTML or CSS standards unless it also aligns with other priorities. (See also https://www.tpgi.com/html5-document-outline/)

  *   From the github issue, it took a lot of reading to work out the benefit of font-x-height, which is (I think) that you can set a font-size which would appear to be the same size across font-families.

  *   There is a mantra in the HTML/CSS space of "come to us with a use-case, not a solution". If you start naming things (like font-x-height) people focus on the wrong things.

  *   If there is a benefit to general web development (e.g. switching font-families doesn't cause layout issues), start with that, and then mention the accessibility benefits.
If you can edit your initial comment in the issue, I'd suggest putting the TL;DR bit at the top, but frame the name as "a CSS property such as font-x-height".

I've previously had a good experience with issues put to the CSS working group. They have a ton of issues, but they are efficient when they get to them. However, proposing a whole new property is a big deal.

I hope that helps,

-Alastair