Add clear to project-item

On the drupal.org module listing pages, whenever a project-item has an image in the teaser (which is floated right using class image-attach-teaser) and also has a short description, that image overlaps into the project-item div below it (see attached screenshot).

It would be a good idea to clear these floats using clear-block on the project-item divs so these images don't overlap into other project listings, creating a messy and possibly confusing display.