Test intrinsic width calculation for multicol. See http://dev.w3.org/csswg/css-sizing/#multicol-intrinsic On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS elm01.offsetWidth is 330 PASS elm02.offsetWidth is 330 PASS elm03.offsetWidth is 330 PASS elm04.offsetWidth is 630 PASS elm05.offsetWidth is 50 PASS elm06.offsetWidth is 330 PASS elm07.offsetWidth is 50 PASS elm08.offsetWidth is 630 PASS elm09.offsetWidth is 100 PASS elm10.offsetWidth is 480 PASS elm11.offsetWidth is 100 PASS elm12.offsetWidth is 630 PASS elm13.offsetWidth is 50 PASS elm14.offsetWidth is 100 PASS elm15.offsetWidth is 50 PASS elm16.offsetWidth is 200 PASS elm17.offsetWidth is 100 PASS elm18.offsetWidth is 150 PASS elm19.offsetWidth is 100 PASS elm20.offsetWidth is 200 PASS successfullyParsed is true TEST COMPLETE