Widget display settings... question / help fix

Hey, I have a widget showing drop down menus for sort of a faceted search / advanced search option seen here:


I need those drop down menus to display horizontally across the page instead of the < LI > Unordered list they are showing up as. I can't find the css/php that controls this display for some reason it is escaping me. Can somebody point me in the right direction to fix this? Is it in the plugin instead of the theme or something?
Here is a diagram of how I need it to display in case that helps:

 

Go to your appearance menu, you'd be able to drag and drop your widget.

 

Thanks for trying, but this is one widget, displaying where it is supposed to, but the items called by the widget are displaying in a vertical list and I need them spaced out horizontally, like full justification... but the drop down boxes are formatted by the CSS to be list items...

 

Link to your website. You can override any CSS by using the !important tag so if it's a list, and you can't find where the CSS is being called, at the very end of your style.css file

Here is some CSS to get you started that will produce a list that is inline, and not vertical like shown

ul {
background-color: #F0F0F0 ;
border-bottom: 2px solid #999999 ;
list-style-type: none ;
margin: 0px 0px 20px 0px ;
padding: 7px 5px 7px 5px ;
}
 
ul.left {}
 
ul.right {
text-align: right ;
}
 
ul li {
display: inline ;
padding: 0px 3px 0px 3px ;
}

Code (markup):

 

Thank you. I will give that a shot. I didn't think about that, kept thinking I needed to find where the plugin was calling it but that should fix my problem.
Cheers.