#scrollToTopArrow{position:fixed;bottom:20px;right:20px;width:40px;height:40px;background-color:rgba(0,0,0,.4);color:#fff;text-align:center;line-height:40px;font-size:24px;cursor:pointer;z-index:1000;border-radius:2px;display:flex;justify-content:center;opacity:0;visibility:hidden;transition:opacity .2s ease-in-out}#scrollToTopArrow.active{visibility:visible;opacity:1}#scrollToTopArrow:hover{background-color:rgba(0,0,0,.8)}#scrollToTopArrow img{width:28px}