A rarely used but extremely useful CSS property, the word-wrap. You can force long unbroken text to wrap in a new line by specifying break-word with the word-wrap property. For example, you can use it to prevent text extending out the box and breaking the layout. This commonly happens when you have a long URL in the sidebar or comment list. Word-wrap is supported in IE 5.5+, Firefox 3.5+, and WebKit browsers such as Chrome and Safari…
Direct link: CSS Word-Wrap: Force Text to Wrap