[SOLVED] Borders to widgets in footer

I have added 3 widgets in the footer using this (to give the footer the appearance of being a continuation of the sidebars above (i.e. the widths are same as for the page)):

<?php bfa_widget_area('name=My widget area&cells=3&align=2&width_1=200&width_3=200&befor e_widget=<div id="%1$s" class="footer-widget %2$s">&after_widget=</div>'); ?>

What I would now like to do is add a dashed vertical line between widgets so it appears to continue the theme above. What should I do, please?