.sf_blog_extra4 {
    float: right;
    width: 675px;
    height: 130px;
    margin: 5px 10px 5px 0;
    display: inline;
    background-repeat: no-repeat;
    background-image: url(images/logo.jpg);
 }

 .sf_blog_extra2 {
    float: left;
    width: 55px;
    height: 51px;
    margin-top: 9px;
    margin-left: 10px;
    background-repeat: no-repeat;
    background-image: url(images/color_mixing2.jpg);
 }