.actGotop{ position:fixed; z-index:10000; bottom:100px;right:10px;width:38px;height:38px;display:none;}
.actGotop a,.actGotop a:link{width:38px;height:38px; border:1px solid #000; display:inline-block;background:url(top.svg) no-repeat 0px 0px #fff; background-size:cover;}
.actGotop a:hover{ background-color:#666; background-position:right;}