#backtotop ul li a {
    width:30px;
    height:30px;
    right:10px;
    float:right;
    display:block;
    padding:20px;
    background-color:#d47300;
    background-image:url("../layout/icon_oben.png");
    background-repeat:no-repeat;
    border-radius:20px;
    text-indent:-999em;
    background-position: center 48%;box-shadow: 0 0 10px #7b7b7b;
}