[SOLVED] How do you float contents of a widet right?

I have created the following custom widget areas in my header, in the configure header area of atahualpa:

<?php bfa_widget_area('name=My widget area&cells=2&align=2&before_widget=<div id="%1$s" class="header-widget %2$s">&after_widget=</div>'); ?>

My question is, how can I make the right side widget contents float to the right - I am using a widget there that only has options and doesn't allow me to add any code to do so.