Please see these browser bug reports:
https://bugzilla.mozilla.org/show_bug.cgi?id=1575174
https://bugs.webkit.org/show_bug.cgi?id=200916
https://bugs.chromium.org/p/chromium/issues/detail?id=993760
I need a way (eg CSS) to opt into precision (and out of snapping/rounding).
Is such a property in any of the existing W3C specs?