.sf_blog_header_wrapper {
    clear: both;
    position: relative;
    width: 900px;
    height: 100px;
    background-position: left;
    background-image: url(images/blog_header.jpg);
    background-repeat: no-repeat;
 }

 body {
    margin: 0 auto;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 12px;
    background-color: #FAFAFA;
    background-position: top;
    background-image: url(http://app.quickblogcast.com/ThemeFiles/1/4/7/3/7/184331-173741/PublishTemp/images/blog_bg.jpg);
    background-repeat: repeat;
 }