CSS Rendering in Firefox and Internet Explorer

Hey guys, is it true that the output for the above will be different in both browsers?
Im trying to position a table right all the way to the top using CSS. Somehow, my desired output works in Firefox but not in Internet Explorer. The table doesnt stick all the way to the top edge in IE.
What do u tink i should do?
CSS Code:
table {
position: fixed;
top: -1px;