I need some serious CSS help

[Chojin]

Most of my problem stems from the differences in the way IE and Firefox render pages. I've been reading around and sites keep recommending that I use CSS child selection to give different commands to firefox and IE. That's all well and good, but what the fuck are things in a CSS block the child of?

This is for a phpbb3 board I'm working on, so I don't even know exactly where everything is going. BUT FOR EXAMPLE if have a line in my stylesheet.css that goes like this:

.footerbar {
	background: #ebebeb none repeat-x 0 0;
	color: #FFFFFF;
	position: relative;
	right: 25px;
	top: 15px;
	clear:both;
	width: 780px;
	height: 86px;
	margin-bottom: 0;
	padding-bottom: 0;
	background-image: url("{T_IMAGESET_PATH}/strikers_footer.jpg");
}

What is the child selector for that?

* > .footerbar is understood in both browsers, so I can't use that.

html > body .footerbar doesn't let either browser understand it.

Insight, prz.