Article is unintentionally sliding down when bottom edge slides up.

[habdelra]

The article CSS appears to be dependent on the geometry that causes the bottom edge to slide up. This behavior does not seem evident in our test dummy apps in the hub repo. I had to introduce an !important as a short term fix to stop this--but we need to fix tis for real.

cardboard/cardboard/app/styles/app.css

Lines 14 to 22 in 41275f8

	.ember-toolbars {
	/* it appears that our CSS for the themes has geometry that is sensitive to
	the ember-toolbars animation that makes the bottom edge slide up. The effect is that
	it looks like the article itself is sliding down at the same time as the bottom edge slides
	up. Ultimately we need to fix the themes CSS to be independent of the bottom edge animations,
	until then, using this quick/ugly hack to hide this problem. I'm sure I'll regret this...
	*/
	margin-bottom: 0 !important;
	}