SO center 9span grid

by panchroma

HTML

<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.0/css/bootstrap-combined.min.css">
<div class="container">   
    <div class="row">
    
        <div class="span8 offset2">
            <div class="row-fluid"> <!-- start nested row -->
               <ul class="thumbnails" id="portfolio-links">
                
                <li class="span4" id="item1"> </li>
                <li class="span4" id="item2"> </li>
                <li class="span4" id="item3"> </li>
                
               </ul><!--/.thumbnails-->
            </div> <!-- close nested row  -->
        </div><!-- close span8 -->
        
    </div><!--/.row-->
</div><!-- close container -->

CSS

.row{
    height:200px;
    background-color:#ddd;
}

.span4{
    background-color:olive;
    height:200px;
}

#portfolio-links {
   
    
}