#backToTop{position:fixed;right:16px;bottom:16px;padding:10px 14px;border:none;border-radius:8px;cursor:pointer;font-size:18px;box-shadow:0 4px 12px rgba(0,0,0,.15);background-color:#820c80}#backToTop:hover{background-color:#9c277d}#backToTop[hidden]{display:none}