#up_action{-webkit-tap-highlight-color:transparent;background-color:#344164;background-image:url(/build/images/scroll.1034c51a.png);background-position-x:center;background-position-y:14px;background-repeat:no-repeat;-webkit-background-size:auto;-moz-background-size:auto;-o-background-size:auto;background-size:auto;border-radius:50%;bottom:80px;cursor:pointer;display:none;height:44px;position:fixed;right:15px;transition:opacity .3s;width:44px;z-index:1000}