#image_wrap {
    /* dimensions */
    width:630px;
    padding:15px 0;
    margin: 0px auto;
 
    /* centered */
    text-align:center;
 
    /* some "skinning" */
    background-color:#efefef;
    border:2px solid #fff;
    outline:1px solid #ddd;
    -moz-ouline-radius:4px;
}