Add this:
form { height: 100%; } td {height: 100%; }
form { height: 100%; } td {height: 100%; }
http://raw.gibney.org/height_test_standards_1
Only problem: The textare is slighty misaligned.
-webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box;