div内的CSS中心内容

我需要将html内容放在div class="Partner"(带有2个图像的顶部div)中.正如您从下图中看到的(它漂浮在div的左侧，而不是中心):

这是我的html代码:

<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>

图像:

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;
}