[CSS21] Margin collapsing with negative margins

Hello,

In this test

http://www.gtalbot.org/BrowserBugsSection/css21testsuite/margin-collapse-negative-margins.html

why isn't there an orange gap of 1em (50px) separating the 2 blue 
stripes?

I have examined this test from all angles. What am I missing?

Thanks, Gérard

Received on Friday, 25 October 2013 00:18:19 UTC