insub2

Topic: Questoin about the IE CSS

What is this for?

Code:

* html .content textarea,* html .content input,.content input[type='submit'],.content input[type='button']{padding:0}

I can't figure out what this is for.  I just commented it out because it was ruining my input buttons.  But I can't see any effect except in IE7.  What's the deal?