Tests of intrinsic cell sizing wrt border/padding, and box-sizing.
box-sizing: content-box; border px; padding px.
box-sizing: border-box, border px, padding px.
box-sizing: border-box;padding: px, width px
td's intrinsic width must be >= border + padding
box-sizing: border-box; border px; padding %.
intrinsic size of % padding is 0.
final size of % padding is computed against table's width.
Block percentage resolution of TD children + row fixed height during intrinsic pass
Chrome Legacy/Edge/Safari do not use row fixed height for percetage block size resolution.
FF uses row height as %ge resolution size.
Proposal: file an issue on what is the right thing to do.