Peter Gasston 03 December 2010 Here’s one thing you can scratch from your wish list: calc() is supported in IE9. Without a prefix. OK, you still can’t use it in WebKit, but I’m sure that’s only a matter of time. Flexible Box is more problematic, unfortunately. Although implemented in Gecko and WebKit, there are a lot of inconsistencies between the two. Also, the W3C have just announced that the whole module is to be revised; there will be a lot of changes, not least that the names of all the properties will change. There was limited support for Flex Box in an earlier IE9 preview, but that’s been removed – probably because of the proposed changes. This is extra annoying because I just wrote an article about Flex Box for .Net magazine!