CSS center content inside div

I need to center html content inside a div class="partners" (top div with 2 images). As you can see from the image below (it floats left instead of center of the div):

This is my html code:

<div id="partners"><div class="wrap clearfix"><h2>Partnertnerzy serwisu:</h2><ul><li><a href="http://www.dilbert.com/"><img width="56" height="16" alt="Parnter bar wika" src="/as/partners/wika.png"></a></li>    <li><a href="http://www.youtube.com><img width="65" height="15" alt="Parnter bar siemens" src="/as/partners/siemens.png"></a></li>    </ul><a class="linkClose" href="/firmy?clbp=1">Zamknij </a></div></div>

Image:

CSS:

#partners, #top {    position: relative;    z-index: 100;}#partners {    margin: 12px 0 3px;    text-align: center;}.clearfix:after, .row:after {    clear: both;    content: ".";    display: block;    height: 0;    visibility: hidden;}#partners .wrap {    width: 655px;}.wrap {    margin: 0 auto;    position: relative;    width: 990px;}#partners h2 {    color: #A6A5A5;    float: left;    font-weight: normal;    margin: 2px 15px 0 0;}#partners ul {    float: left;}ul {    list-style-position: outside;    list-style-type: none;}