#preview_book_home {
    float:                  right;
    width:                  266px;
    height:                 245px;
    margin-top:             2px;
}


.preview_book_home_floating {
    width:                  266px;
    height:                 245px;
    border-bottom:          8px solid #585858;
    position:fixed; 
    top:0; 
    z-index:100;
    left: 50%;
    margin-left: 195px;
}