1	1	A box with negative margin should drop it in order to fit next to floats rather than push below the floats. This behaviour is not defined by CSS2.1, but the behaviour enforced by this test makes us match IE and FF.
2	2
	3	Header
	4	FAIL:
	5	Expected 650 for width, but got 1050.
	6
	7	<div class="box margin-left" data-expected-width="650">Header</div>
3	8	Header
4	9	PASS
5	10	Header
6	11	PASS
7	12	Header
8		PASS
	13	FAIL:
	14	Expected 650 for width, but got 1050.
	15
	16	<div class="box margin-right" data-expected-width="650">Header</div>
9	17	Header
10	18	PASS
11	19	Header
12	20	PASS
13		Header
14		PASS