And while IE and Firefox have supported unprefixed CSS transforms for a while now, Chrome and Safari only support the -webkit-prefixed version of CSS transforms so far. So if you want to do transforms, you have to use -webkit prefixes...
Oh for fuck's sake, the query is specifically looking for -webkit-box-sizing, not for webkit-prefixed properties in general.
And while IE and Firefox have supported unprefixed CSS transforms for a while now, Chrome and Safari only support the -webkit-prefixed version of CSS transforms so far. So if you want to do transforms, you have to use -webkit prefixes...