html{scroll-behavior:smooth}button#myBtn{border-radius:100%;border:0;background:#ccc;color:#fff;height:70px;width:70px;position:fixed;bottom:20px;right:20px;box-shadow:0 0 10px rgba(0,0,0,.1803921568627451);transition:all .2s linear;cursor:pointer;font-size:12px;font-weight:600;z-index:99999}button#myBtn:hover{box-shadow:0 0 20px rgba(0,0,0,.1803921568627451)}button.btn-left{left:20px!important}button.btn-center{display:block;right:auto!important;left:50%;margin-left:-15px}button.btn-right{right:20px!important}