That should be corrected if anyone invents a time machine. :P
... read the whole story at wiki.csswg.org.
white-space: nowrap should be
vertical-align should not apply to table cells. Instead the CSS3 alignment properties should exist in Level 1.
vertical-align: middle should be
x-middle because it's not really in the middle, and such a name would better describes what it does.
Percentage heights should be calculated against
fill-available rather than being undefined in auto situations.
Table layout should be sane.
Box-sizing should be