#backtotop {
    width: 35px;
    line-height: 35px;
	border-radius: 6px;
	opacity: 0.8;
    overflow: hidden;
    z-index: 999;
    display: none;
    cursor: pointer;
    -moz-transform: rotate(270deg);
    -webkit-transform: rotate(270deg);
    -o-transform: rotate(270deg);
    -ms-transform: rotate(270deg);
    transform: rotate(270deg);
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #DDD;
    color: #555;
    text-align: center;
    font-size: 25px;
    text-decoration: none;
}

#backtotop:hover {
    background-color: #DDD;
    color: #555;