It's not clear from your post if you understand this or not, but for the benefit of anyone else, the reason it breaks is (I guess) because the face is made up of many superimposed letters, colored and positioned with CSS. If you translate the page it's likely that certain letters or runs of letters will be translated to equivalent words in the other language.

This is kind of interesting, but doesn't really say anything about whether the web is broken or not. The fact that it doesn't work for me in Chrome even in the original spanish might though.