.scrollUp{position:fixed;z-index:100;right:15px;bottom:15px;width:48px;height:48px;border-radius:50%;opacity:.6;cursor:pointer;background-color:gray}.scrollUp:hover{opacity:1}.scrollUp:after,.scrollUp:before{content:"";display:block}.scrollUp:before{position:absolute;top:0;left:50%;margin-left:-12px;border:12px solid;border-top-color:transparent;border-left-color:transparent;border-right-color:transparent}.scrollUp:after{position:absolute;top:23px;left:50%;border-top:15px solid;border-left:10px solid;margin-left:-5px;border-radius:2px}