Break long word with CSS

I have found this solution my self.

word-break: break-all;

but it doesn't work for Opera.

http://www.w3schools.com/cssref/tryit.asp?filename=trycss3_word-break

What you need is word-wrap: break-word;, this property will force the non spaced string to break inside the div

Demo

div {
   width: 20px;
   word-wrap: break-word;
}