a.go-top{position:fixed;bottom:300px;display:none;color:#333;right:20px;z-index:99999;font-size:30px;border:1px solid #333;border-radius:40px;width:40px;height:40px;text-align:center;line-height:30px;text-shadow:0 1px 1px #333;transition:all .3s ease;-moz-transition:all .3s ease;-webkit-transition:all .3s ease;-o-transition:all .3s ease;-ms-transition:all .3s ease}a.go-top.fadeIn:hover{color:#fff;border-color:#fff}a.go-top.fadeIn{display:block;bottom:20px;-moz-transition:all .3s ease;-webkit-transition:all .3s ease;-o-transition:all .3s ease;-ms-transition:all .3s ease}