css3 translate in percent

Question

I am stuck on defining an css3 cube completely with percent.

Here a short example in Codepen

http://codepen.io/anon/pen/detAB

As you can see the cub

Answer 1

The percentage there is not of the parent container in the way you might expect but of the element itself. The spec describes it as:

[The percentage] refer[s] to the size of the element's box

Regarding %s, the spec says:

Note that values are not allowed in the translateZ translation-value, and if present will cause the propery value to be invalid.

Though, it seems that instead, they aren't valid in any of them for Chrome at least.

Sorry :(