The style is unfortunately hardcoded in the plugin, so you need to edit :
frontend-noajax.inc.php
And what you probably want to edit is this line :
$style = apply_filters( 'bawmrp_li_style', 'float:left;width:120px;height:250px;overflow:hidden;list-style:none;border-right: 1px solid #ccc;text-align:center;padding:0px 5px;' );
I know it’s a bit late, but just for the benefit of others who might stumble across this, I was able to use CSS to style it by adding “!important” after each line.
I realize that it’s not ideal, but it does work.
Suggesting that someone edit a plugin file on a line containing “apply_filters()” is a good sign that you’d probably benefit from understanding what filters are and what they’re for.
That line is specifically written so that you DON’T have to edit the plugin.
http://wordpress.org/plugins/baw-manual-related-posts/faq/
http://dev.themeblvd.com/tutorial/filters/
