3D Box Model is now Creative Commons
Since I posted the original 3D CSS Box Model diagram, I’ve had a lot of requests from people who want to re-use and/or adapt it. I always intended that it be free for the taking if someone found it useful, but people seem to like the security of a legal document. So its now released under a Creative Commons license to do with as you wish, and has been moved to a more permanent location at https://www.hicksdesign.co.uk/3dboxmodel.
Also, as Dunstan pointed out to me, the content is actually on top the of the border, rather than underneath it. You have to do some negative margin tom-foolery to see this, but I’ve updated the original diagram to take this into account.