#content-wrapper {
    background-image: url(../images/content_wrapper_single_bg.png);
    float: none;
    margin-right: 19px;
    width: auto;
}
    #content-top {
        background-image: url(../images/content_top_single_bg.png);
    }
        #content-bottom {
            background-image: url(../images/content_bottom_single_bg.png);
        }