I am trying to wrap all my text(Korean).

However, when I try [word-break:keep-all](http://www.w3schools.com/cssref/css3_pr_word-break.asp), chrome and other browsers states that it is a invalid property. break-all, break-word property works.

![enter image description here](https://i.stack.imgur.com/pmEFk.png)

What is going on here?