.scroll-to-top{position:fixed;bottom:30px;right:30px;background:linear-gradient(45deg,#646464,#1e1e1e);color:#fff;border:none;padding:12px 18px;cursor:pointer;border-radius:10px;box-shadow:0 4px 8px rgba(0,0,0,.2);transition:background .3s,transform .3s,box-shadow .3s;font-size:18px}.scroll-to-top:hover{background:linear-gradient(45deg,#1e1e1e,#646464);transform:translateY(-3px);box-shadow:0 6px 12px rgba(0,0,0,.3)}.scroll-to-top:active{transform:translateY(0);box-shadow:0 4px 8px rgba(0,0,0,.2)}