This filled yellow square should use, should occupy 400px wide by 400px high (expected results), not 300px wide by 300px high (actual results)

An HTML comment before the doctype declaration will trigger Internet Explorer 7 and Internet Explorer 8 into backward-compatible "quirks" rendering mode when it should not do so.

Firefox 1.5, Firefox 2.x, Firefox 3.0.4, Opera 9.62, Safari 3.2, Safari 4.0, Konqueror 3.5.10, Konqueror 4.1.1, Hv3 TKHTML alpha 16, Amaya 10.0.1, Seamonkey 1.x, Seamonkey 2.x, NS 7.2, K-meleon 1.x, Galeon 2.0.7, Epiphany 2.22 all pass this test.

This bug has been reported at connect's IE beta feedback as bug 382800. This bug has been closed by the IE team and will not be fixed for the release of IE 8 final.

Valid HTML 4.01! CSS compliant