.in-page-nav{background:#fff;box-shadow:0 2px 5px rgba(0,0,0,.1);padding:10px;position:sticky;top:0;z-index:1000}.in-page-nav ul{display:flex;gap:20px;list-style:none;margin:0;padding:10px}.in-page-nav ul li{display:inline}.in-page-nav ul li a{color:#000;font-weight:700;padding:10px;text-decoration:none}html{scroll-behavior:smooth}