New Clearfix Hack

Without Clearfix

This image is floated to the right. It is also taller than the element containing it, so it overflows outside of its container:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus imperdiet...

With New Modern Clearfix

Add the clearfix hack to the containing element, to fix this problem:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus imperdiet...