Saving the Day with Scoped #CSS | CSS-Tricks
►http://css-tricks.com/saving-the-day-with-scoped-css
The style block with the scoped attribute will overwrite the global styles generally found in the head (whether in a style block or linked stylesheet), but only on the sibling/descendent elements inside the same parent.
Chrome 20 is the only browser at the time of this writing that is supporting scoped styles.