#scrolltopbtn{border:0 solid #000;border-radius:5px;position:fixed;top:auto;bottom:25px;left:auto;right:25px;opacity:.70;background-color:#000;width:50px;height:50px;cursor:pointer;z-index:9999;justify-content:center;align-items:center;display:none;-webkit-transition:opacity .5s linear;-moz-transition:opacity .5s linear;-o-transition:opacity .5s linear;transition:opacity .5s linear}#scrolltopbtn svg{}#scrolltopbtn:hover{opacity:1}