.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:0 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:#aaa}.backtop-item:hover{color:#333;cursor:pointer;cursor:hand}.backhome,.backtop{font-size:40px}