header renders diff on diff browser

My web page's header looks smaller in Chrome tha开发者_StackOverflow中文版n in FireFox. Any idea why? How can I make them look the same?

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Use a CSS reset and many of your problems will go away.

http://developer.yahoo.com/yui/reset/

By default many of the html styles and setting are different between browsers. The best thing to do is "reset" (clear) them and style them the way YOU want them to appear.