[RESOLVED] What is causing this gap in Firefox?

[sois]

http://www.sois.com/

Look under the pink menu. It isn't there in IE7. It's there in Firefox 3. Any ideas?

[NogDog]

The problem is that the top margin of the H1 element is non-zero, but the padding of the containing "c4" div is 0. In this case FF leaves space above the containing div to make room for that H1's top margin. I don't know if this is a feature or a bug, but there are two ways to fix it: (1) give the H1 element a margin-top value of 0, or (2) give the .c4 div a padding-top value of 1px (or more).

[sois]

Hmm... it's odd. I will use your padding-top suggestion. Good work!