.backtop-block{position: fixed;width: 48px;height: 100px;right: 30px;bottom: 30px;}
.backtop-block ul{display: block;padding:0;margin: 0;}
.backtop-block ul li {width: 48px;height: 48px;border: 0px solid gray;margin: 2px 0;list-style: none;}
.backtop-block ul li a{text-decoration: none;text-align: center;}
.backtop-item{width: 48px;height: 48px;display: block;color: #aaaaaa;}
.backtop-item:hover{color: #333333;cursor: pointer;cursor: hand;}
.backtop{font-size: 40px;}
.backhome{font-size: 40px;}