When I tried to validate the page, the validator barfed at a div having both a z-index and a background-image...
Christian Biesinger wrote: > Eric wrote: > >> And what's the HTML standard for this (do negative z-indeces mean : >> hidden? But if so, why have the option "hidden" as well?) > > > It's CSS, not HTML, but here it is: > http://www.w3.org/TR/REC-CSS2/visuren.html#z-index > > It doesn't explicitly prohibit negative values, and the type is given as > "integer" which includes negative numbers. > > So I think that they are allowed; thus, I believe that this is a bug in > Mozilla. >
