html{scroll-behavior:smooth}*{margin:0;padding:0}nav{display:flex;justify-content:flex-end;padding:1rem;background-color:#f8f9fa;border-bottom:1px solid #dee2e6}nav button{margin-left:1rem;padding:.5rem 1rem;border:1px solid #007bff;border-radius:4px;background-color:#007bff;color:#fff;cursor:pointer}nav button:hover{background-color:#0056b3}