.totop{position:fixed;right:25px;bottom:25px;display:block;width:26px;height:62px;background:url(https://www.cnblogs.com/images/cnblogs_com/happyty/718475/t_rocket.png) no-repeat 0 0;-webkit-transition: all 0.2s ease-in-out;}
.totop:hover{background:url(https://www.cnblogs.com/images/cnblogs_com/happyty/718475/t_rocket.png) no-repeat 0 -62px;}
#navList a:link {
    color: #fff;
    text-shadow:0px 0px 0px #000000;
}